Tag Archives: FS7

Free ProRes Raw and Sony Venice Webinars

I will be doing a couple of free interactive Webinars with Visual Impact in July. The first is on ProRes Raw looking at what it is, the equipment you will need and how to shoot with it.

http://www.visuals.co.uk/events/events.php?event=eid11028-839

The second is about my practical experiences shooting with a Sony Venice using the version 2 firmware.

http://www.visuals.co.uk/events/events.php?event=eid14021-841

Both webinars will feature a Q&A session where you will be able to ask questions online. You will find the full details about both webinars by following the links above, including how to register. The webinars are free but registration is required to obtain the login details for the events.

 

Advertisements

Firmware 4.30/1.20 for the PXW-FS7 and PXW-FS7M2 Released. New ISO change in Cine-EI added.

Sony have just released a firmware update for the PXW-FS7 and PXW-FS7 II cameras. This is a minor update with only one new feature being added which is the ability to alter the recorded ISO when shooting in the Cine-EI mode.

FS7: https://pro.sony/ue_US/support/software/pxw-fs7-software-v4-30

FS7 II: https://pro.sony/ue_US/support/software/pxw-fs7m2-v120

When the camera is set to CineEI, this new function is turned on and off in the menu under System – Base Settings – Rec/Out EI Applied.

What does it do?

When shooting normally using Cine EI, assuming that no LUT is applied to SDI1/Rec the camera always records at it’s base sensitivity (2000 ISO exposure rating) with no added gain. This is done to ensure that the cameras full dynamic range is always available and that the full recording range of either S-Log2 or S-Log3 is always available.

Then the EI system is used to apply a LUT just to the viewfinder or SDI 2 for monitoring. The gain of the LUT can then be changed to provide a brighter or darker viewfinder/monitor image. For example setting the EI to 1000 EI would make the viewfinder image darker than the base setting of 2000EI by 1 stop.

VF-side-by-side Firmware 4.30/1.20 for the PXW-FS7 and PXW-FS7M2 Released. New ISO change in Cine-EI added.
2000EI and 1000EI as seen in the viewfinder with NO exposure change (image from PMW-F5, but the FS7 is more or less the same).

Because you are viewing this darker image you would then open the cameras aperture by 1 stop to compensate. Opening the aperture up results in a brighter recording. A brighter recording, achieved by putting more light onto the sensor will have less noise than a darker exposure, so the end result is brighter recorded images with less noise.

This process is often referred to as “rating” the camera and it is in many cases preferable to “rate” the FS7 around a stop slower (Viewfinder is darker, less sensitive, so that means you end up opening up the aperture) than the base 2000 ISO rating to gain a cleaner image that typically gives much greater flexibility in post production. So many users will set the EI on an FS7 to 1000 or 800 (It’s no co-incidence that I find  get the sweet spot to be 800EI which happens to match the rating that Sony give the FS7 when shooting Rec-709).

Because in the normal EI mode there is no change to the cameras actual recording gain (the recordings take place at the equivalent of 2000 ISO) there is no change to the dynamic range. The camera will always capture 14 stops no matter what you set the EI to. However if you open the aperture by an extra stop (selecting 1000 EI, which results in a 1 stop darker viewfinder image, so to compensate you open up 1 stop) you move the mid point of the exposure up 1 stop. This means you will reduce the over exposure headroom by 1 stop but at the same time you gain one stop of under exposure range. You will see 1 stop further into the shadows, plus there will be less noise, so the shadow range becomes much more useable.

Conventional EI mode and Post Production.

In post production these brightly exposed images will need some degree of adjustment. If you are doing a virgin grade from scratch then you don’t really need to do anything extra or different, you will just grade it to taste.

If you are using a LUT you will need to either use an exposure compensated LUT (I always provide these in any of my free LUT sets) or you will need to correct the exposure before applying the LUT. If you apply a standard LUT and then try to correct the exposure the results will often not be satisfactory as the LUT determines many things such as where any highlight roll-off occurs. Correcting after this can result in washed out of flat looking skin tones. So really you need to make the exposure correction to the material before it is passed to the LUT.

No loss of dynamic range with conventional EI.

It’s worth noting that even though the levels are reduced to “normal” levels when applying an exposure compensated LUT or through grading this should not reduce the dynamic range. You do not just shift the range down (which would hard clip the blacks and cause a loss of DR at the low end). What you are typically doing is reducing the gain to bring the levels down and this allows the information in the new extended shadow range to be retained, so nothing is lost and your footage will still have 14 stops of DR along with nice clean shadows and mid tones.

Is this all too difficult?

However, some people find that the need to correct the exposure prior to adding the LUT difficult or time consuming (I don’t know why, they just do. It takes  no longer to add a compensated LUT than a normal LUT). Or some people find it difficult to get a good looking image from  brightly exposed footage (probably because they are grading after the LUT has been applied). For these reasons Sony have added the ability to bake the EI change directly into the recording by shifting the gain of the recordings to match the selected EI.

Rec/Out EI Applied:

So now if you enable Rec/Out EI Applied any change you make to the cameras EI settings will now also be applied as a gain change to the recordings. If you set the EI to 1000, then the recordings will take place at 1000 ISO and not 2000 ISO. This means that you do not have to make any exposure corrections in post production, just apply a standard LUT.

You will loose some of your dynamic range:

The down side to this is that you are now changing the gain of the camera. Changing the gain away from 0dB will reduce the dynamic range and affect the recording range. So, for example if you wish to shoot at 1000 EI have Rec/Out EI Applied you will be recording with -6dB gain and an effective ISO of 1000. You will have 1 stop less of shadow range as the cameras effective sensitivity is being reduced by 1 stop but the sensors clip/overload point remains the same. So when you open the aperture to compensate for the lower sensitivity you will have the same shadow range as base, but loose one stop off the top. The images will have less noise, but there will be no additional shadow information and a reduction in highlight range by 1 stop, the DR will be 13 stops.

Another side effect of this is that the peak recording level is also reduced. This is because the cameras clipping point is determined by the sensor. This sensor clip point is normally mapped to the peak recording level and the cameras noise floor is mapped to the black level (you can’t see things that are darker than the sensors noise floor no matter what level of gain you use as the noise will always be higher than the object brightness).

Slide2-1 Firmware 4.30/1.20 for the PXW-FS7 and PXW-FS7M2 Released. New ISO change in Cine-EI added.If you reduce the gain of the signal this level must decrease as a result. This means that S-Log3 which normally gets to around ~94% will now only reach ~85%, the change to S-Log2 is even greater (S-Log3’s peak recording level will reduce by 8.9% for every stop down you go, S-Log2 will reduce by 12% for each stop you go down ).

Slide6-1 Firmware 4.30/1.20 for the PXW-FS7 and PXW-FS7M2 Released. New ISO change in Cine-EI added.

 

Raising the EI/ISO will also reduce the dynamic range as the gain is applied after the sensor. So the sensors clip point remains the same, so the brightest highlight it handles remains fixed. Adding gain after this simply means the recordings will clip earlier, but you will get a brighter mid range, brighter (but not more) shadows and a noisier picture.

Slide4-1 Firmware 4.30/1.20 for the PXW-FS7 and PXW-FS7M2 Released. New ISO change in Cine-EI added.

 

What happens in post with Rec/Out EI Applied?

In post production these range and peak level changes mean that while a standard LUT will result in a correct looking mid range (because middle grey and skin tones will be at “normal” levels) there may be some problems with highlights never reaching 100% in the case of a low EI/ISO. Or being excessively clipped in the case of a high EI/ISO.  Remember LUT’s are designed to work over very specific ranges. So if the input to the LUT doesn’t reach the peak level the LUT is expecting then the output from the LUT will also be reduced. So often there will still be the need to do some additional grading of highlights prior to the application of the LUT, or the need to use LUT’s designed specifically for each ISO rating (and the design of these LUT’s is more complex than a simple exposure offset).

Is it really easier?

So while this new feature will simplify the workflow for some situations where an alternate ISO/EI has been used – because exposure correction in post production won’t be needed. It may actually make things more difficult if you have bright highlights or need to be sure that your finished video meets expected standards where highlights are at 100%. You will still need to do some grading.

I don’t recommend that you use it.

Personally I do not recommend that you use this new feature. There are plenty of exposure compensated LUT’s available online (I have lots here). Tweaking the exposure of log footage in post production isn’t that difficult, especially if you use a color managed workflow. My guess is that this is aimed at FCP-X users where FCP-X applies a default LUT as standard. In this instance footage shoot with an offset exposure will look over/under exposed while footage shoot with the EI/ISO Applied will look normal (except for the highlights). So on the face of things the workflow may appear simpler. But you are loosing dynamic range and surely the primary reason for shooting with log is to maximise the dynamic range and gain the greatest possible post production flexibility.  This new feature reduces dynamic range and as a result reduces post production flexibility.

Of course just because I don’t recommend it’s use, it doesn’t mean that you can’t or shouldn’t use it if it works for you, just make sure you fully understand what it is doing.

Why is the white balance limited to 3 presets when using S-Log2, S-Log3 or raw?

This seems to be a source of frustration for many people shooting  raw or using S-Log2 or S-Log3 on a Sony camera. When shooting log and raw you should also be using a matching S-Gamut colour gamut if you want to get the best from the camera and this ties you into one of 3 preset white balances.

With a PXW-FS7, PMW-F5 or F55 it is possible to use custom mode to select a different colour space to mix with S-Log2 or S-Log3 and then have a variable white balance. With the Alpha cameras, PXW cameras such as the FS5 you can choose any Gamut you want in the picture profiles, but I don’t recommend this. For a start, if you don’t use one of the S-Gamuts you will be limited to Rec-709 Gamut, so you won’t be recording  the cameras full colour range. Also in custom mode there are some other things like noise reduction that you really don’t want when shooting S-log2/3 (it can cause banding).

So why is the S-Gamut white balance fixed to the 3 presets for daylight, fluorescent and tungsten? The main reason is to ensure you get the cameras full dynamic range in each colour. White balance is a gain function, it adjusts the gain of the red, green and blue channels so that white objects appear white under differing light sources. So if the light source lacks blue light – making the pictures look excessively warm – you add extra gain to the blue channel to compensate.

But the problem with this is that gain affects dynamic range. When shooting log (or raw) the camera needs to operate the sensor at the optimum gain level to squeeze the highest possible dynamic range from the it. Changing the gain in just one colour channel to shift the white balance could result in a reduction of dynamic range in the channel. This could manifest itself as colours in one channel that clip sooner than the others. This can be really hard to deal with in post production and can show up as things like bright clouds with a colour cast that isn’t in the rest of the picture.

Another potential issue is that because of the way silicon sensors work the blue channel is almost always noisier than the red and green. So you want to keep the gain in the blue channel as low as possible to prevent the pictures getting too noisy. This is particularly important when shooting log as you won’t see your end result until after the images have been graded. So manually shifting the gain of the blue channel in camera to correct the white balance could lead to footage that ends up noisier than you would expect.

So – Sony chose to fix the white balance to 3 carefully tuned presets designed to avoid this situation and maximise the dynamic range. After all, when shooting log or raw it is expected that the footage will be graded anyway, so the white balance will normally be adjusted as part of the post production process.

There are some people that advocate adjusting the FS5’s white balance via the picture profile settings, personally I don’t recommend this or feel that it’s necessary. But yes, you can do this, but just keep a very close eye on your highlights and if you can use monitor with RGB parade to make sure you have equal recording levels for your whites without one colour channel clipping ahead of the others. Also apply a LUT in the monitor that is close to your desired output so that you can keep an eye on the noise levels.

In summary – the white balance is preset to ensure you don’t encounter problems later on. You should be able to fully adjust and fine tune your white balance in post production to a far greater degree than is possible in camera anyway, so don’t worry if the WB is a touch off when shooting.

The only exception to this is the new Sony Venice. Venice has enough dynamic range and enough internal processing power to allow you to make a wide range of white balance adjustments in camera. Hopefully we will see some of this flexibility trickle down to the next generations of lower cost Sony digital cinema cameras.

ProRes Raw and Atomos Inferno and Sumo – BIG deal for the FS5 and FS7!!

proresraw-logo ProRes Raw and Atomos Inferno and Sumo - BIG deal for the FS5 and FS7!!Over the last few days there have been various rumours and posts coming from Apple about how they intend to get back to providing decent support for professional users of their computers. Apple have openly admitted that the Trash Can Mac Pro has thermal problems and as a result has become a dead end design, which is why there haven’t been any big updates to the flagship workstation from Apple. Apple have hinted that new workstations are on the way, although it would seem that we won’t see these until next year perhaps.
Another announcement came out today, a new version of FCP-X is to be released which includes support for a new ProRes codec called ProRes Raw. This is BIG!

PRORES RAW.

Raw recordings can be made from certain cameras that have bayer sensors such as the Sony FS5 and FS7. Recording the raw data from the sensor maximises your post production flexibility and normally offers the best possible image quality from the camera. Currently if you record 4K raw with these cameras using an Atomos Shogun or similar the bit rate will be close to 3Gb/s at 24p. These are huge files and the cDNG format used to record them is difficult and clunky to work with.  As a result most users take the raw output from the camera and transform it to S-Log2 or S-Log3 and record it as 10 bit ProRes on the external recorder. This is a bit of a shame as going from 12 bit linear raw to 10 bit S-log means you are not getting the full benefit of the raw output.

Enter ProRes Raw:  ProRes Raw will allow users to record the cameras raw output at a much reduced bit rate with no significant of quality. There are two versions, ProRes Raw and ProRes Raw HQ. The HQ bit rate is around 1Gb/s at 24fps. This is not significantly bigger than the ProRes HQ (880Mb/s) that most users are using now to record the raw, yet the full benefit of 12 bit linear will be retained. A 1TB SSD will hold around an hour of ProRes Raw, compare that to uncompressed raw where you only get around 20 mins and you can see that this is a big step forwards for users of the FS5 in particular.

ProRes Raw (the non HQ version) is even smaller! The files are smaller than typical ProRes HQ files. This is possible because recording raw is inherently more efficient than recording component video.

It is claimed by Apple that ProRes Raw will play back in real time on MacBook Pro’s and iMacs without any additional rendering or external graphics cards, so it obviously isn’t terribly processor intensive. This is excellent news! Within FCP-X the playback resolution can be decreased to bring improved playback performance in less powerful systems or mutistream playback.

It looks like you will be able to record from a 4K DCI  from an FS5 or FS7 at up to 60fps continuously. This breaks through the previous limits for the Shogun of 30fps. The FS7 will be able to record 2K raw at up to 240fps and the FS5 will be able to record 4K raw at 100 and 120fps for 4 seconds. Other raw cameras are also supported by the Atomos recorders at differing frame sizes and frame rates.

At the moment the only recorders listed as supporting ProRes Raw are the Atomos Shogun Inferno and the Sumo19 and it looks like it will be a free update. In addition the DJI Inspire 2 drone and Zenmuse X7 Super 35mm camera will also support ProRes Raw.

Whether you will be able to use ProRes Raw in other applications such as Resolve or Premiere is unclear at this time. I hope that you can (or at least will be able to in the near future).

SEE: Apple Press Release.

SEE: Apple ProRes Raw White Paper

SEE: ATOMOS ProRes Raw INFO PAGE.

 

 

Checking Log exposure with the Hi and Low Key Function on the PXW-FS7, PMW-F5 and PMW-F55

First: If there is something you wish to know about please try the search box to search this web site. You should find a search box on the left of every page when using a normal web browser. If you are using a mobile web browser then the search box will appear towards the bottom of each page, you may need to scroll down to find it, but it’s there.

A great function that allows you to check the extreme ends of your log exposure in the CineEI mode is the Hi/Low Key function. It has to be assigned to a button before you can use it, but it provides a very fast way to check what is really going on in your highlights and shadows. You’ll find all you need to know about High and Low key here.

Scene files for the Sony PXW-FS7M2.

Here are some scene files for the PXW-FS7-II and original PXW-FS7. The first 5 scene files I published a couple of years ago but never got around to converting them over to the PXW-FS7-II. You can download the files in their correct folder structure to put on to an SD card so you can load them directly in to an FS7 or FS7-II. Or you can manually copy the settings from here. If copying the settings in manually I recommend you start by going to the “Files” section of the cameras menu and “Scene File” and import a “standard” default scene file from the cameras internal memory first to ensure you paint settings are at the original factory defaults prior to entering the settings by hand. The easiest way is to load the files linked at the bottom of the page onto an SD card and then go to the files section of the menu to load the scene files into the camera from the SD card.

If you find these useful, please consider buying me a coffee or other drink. It’s always appreciated!


Type



pixel Scene files for the Sony PXW-FS7M2.

The paint settings in for each of these setups are standard except for the items listed in each profile.

Scene File 1: AC-Neutral-HG4.

Designed as a pleasing general purpose look for medium to high contrast scenes. Provides a neutral look with slightly less yellow than the standard Sony settings. I recommend setting zebras to 60% for skin tones or exposing a white card at 75-80% for the best results.

Black: Master Black: -3.  Gamma: HG4 .  White Clip: OFF.  Aperture : OFF

Matrix: ON. Adaptive Matrix: Off. Preset Matrix: ON. Preset Select: Standard. User Matrix: ON. Level: 0. Phase: 0.

R-G: +10. R-B: +8. G-R: -12. G-B: -9. B-R: -5. B-G: -15.

Scene File 2: AC-Neutral-HG3

Similar to the above except better suited to lower contrast scenes or lower light levels. Provides a neutral look with slightly less yellow than the standard Sony settings. I recommend setting zebras to 60% for skin tones or exposing a white card at 75-80% for the best results.

Black: Master Black: -3.  Gamma: HG3 .  White Clip: OFF.  Aperture : OFF

Matrix: ON. Adaptive Matrix: Off. Preset Matrix: ON. Preset Select: Standard. User Matrix: ON. Level: 0. Phase: 0.

R-G: +10. R-B: +8. G-R: -12. G-B: -9. B-R: -5. B-G: -15.

Scene File 3: AC-FILMLIKE1

A high dynamic range look with film like color. Will produce a slightly flat looking image. Colours are tuned to be more film like with a very slight warm tint. I recommend settings zebras to 57% for skin tones and recording white at 70-75% for the most “filmic” look.

Black: Master Black: -3.  Gamma: HG7 .  White Clip: OFF.  Aperture : OFF

Matrix: ON. Adaptive Matrix: Off. Preset Matrix: ON. Preset Select: Cinema. User Matrix: ON. Level: -3. Phase: 0.

R-G: +11. R-B: +8. G-R: -12. G-B: -9. B-R: -3. B-G: -12.

Scene File 4: AC-FILMLIKE2

A high dynamic range look with film like color. Will produce a n image with more contrast than Filmlike1. Colours are tuned to be more film like with a very slight warm tint. I recommend settings zebras to 57% for skin tones and recording white at 70-75% for the most “filmic” look.

Black: Master Black: -3.  Gamma: HG8.  White Clip: OFF.  Aperture : OFF

Matrix: ON. Adaptive Matrix: Off. Preset Matrix: ON. Preset Select: Cinema. User Matrix: ON. Level: -3. Phase: 0.

R-G: +11. R-B: +8. G-R: -12. G-B: -9. B-R: -3. B-G: -12.

Scene File 5: AC-VIBRANT-HG3

These setting increase dynamic range over the standard settings but also increase the colour and vibrance. Designed to be used for when a good dynamic range and strong colours are needed direct from the camera. Suggested zebra level for skin tones is 63% and white at approx 75-80%.

Black: Master Black: -3.  Gamma: HG3.  White Clip: OFF.  Aperture : OFF

Matrix: ON. Adaptive Matrix: Off. Preset Matrix: ON. Preset Select: Standard. User Matrix: ON. Level: +23. Phase: -5.

R-G: +12. R-B: +8. G-R: -11. G-B: -6. B-R: -6. B-G: -17.

Scene File 6: AC-VIBRANT-HG4

These setting increase dynamic range over the standard settings but also increase the colour and vibrance. HG4 has greater dynamic range than HG3 but is less bright, so this variation is best for brighter high dynamic range scenes. Designed to be used for when a good dynamic range and strong colours are needed direct from the camera. Suggested zebra level for skin tones is 60% and white at approx 72-78%.Black: Master Black: -3.  Gamma: HG3.  White Clip: OFF.  Aperture : OFF

Matrix: ON. Adaptive Matrix: Off. Preset Matrix: ON. Preset Select: Standard. User Matrix: ON. Level: +23. Phase: -5.

R-G: +12. R-B: +8. G-R: -11. G-B: -6. B-R: -6. B-G: -17.

Scene File 7: AC-KODAKISH3200K (Include “Scene White Data – ON” when loading from the SD card).

This is a highly experimental scene file that uses a heavily tweaked matrix along with extensive colour adjustments via the multi-matrix. The aim being to reproduce a look reminiscent of Kodak film stock. The white balance is deliberately skewed very slightly bue/teal and then skin tones and orange shades boosted. When loading this scene file from an SD card you must also set “White Data” to ON to import the offset color preset. You can then either use the preset white balance or white balance using memory A/B and a white card. Do NOT use ATW.  This version is intended for use under TUNGSTEN lighting where the white balance would normally be 3200K. Please test that this profile produces a result you like before you start shooting with it as the look is quite strong and may be difficult to change later if you don’t like it. I recommend settings zebras to 57% for skin tones and recording white at 70-75% for the most “filmic” look.

White: Preset White 2800K

Offset White A: ON.  Warm Cool A: -25. Warm Cool Balance A: +10

Offset White B: ON.  Warm Cool B: -25. Warm Cool Balance A: +10

Black: Master Black: -3.  Gamma: HG4 .  White Clip: OFF.  Aperture : OFF

Matrix: ON. Adaptive Matrix: Off. Preset Matrix: ON. Preset Select: Cinema. User Matrix: ON. Level: -10. Phase: 0.

R-G: +61. R-B: +29. G-R: -6. G-B: -35. B-R: +21. B-G: -5.

MultiMatrix: ON

B: Hue -18, Saturation 0.

B+: Hue +5, Saturation 0.

MG-: Hue +5, Saturation 0.

MG: Hue +5 Saturation -7.

MG+: Hue 0, Saturation -3.

R: Hue -21, Saturation +65.

R+: Hue +0, Saturation +99.

YL-: Hue +39, Saturation +44

YL: Hue 0, Saturation 0.

YL+ Hue +20, Saturation -10.

G-: Hue -71, Saturation 0.

G: Hue -61, Saturation +10.

G+: Hue -23, Saturation +11

CY: Hue -40, Saturation +9.

CY+:Hue -22, Saturation +54.

B-:Hue +20, Saturation -5.

Scene File 8: AC-KODAKISH5600K (Include “Scene White Data – ON” when loading from the SD card).

This is a highly experimental scene file that uses a heavily tweaked matrix along with extensive colour adjustments via the multi-matrix. The aim being to reproduce a look reminiscent of Kodak film stock. The white balance is deliberately skewed very slightly bue/teal and then skin tones and orange shades boosted. When loading this scene file from an SD card you must also set “White Data” to ON to import the offset color preset. You can then either use the preset white balance or white balance using memory A/B and a white card. Do NOT use ATW.  This version is intended for use under daylight lighting where the white balance would normally be 5600K/6000K. Please test that this profile produces a result you like before you start shooting with it as the look is quite strong and may be difficult to change later if you don’t like it. I recommend settings zebras to 57% for skin tones and recording white at 70-75% for the most “filmic” look.

White: Preset White 4900K

Offset White A: ON.  Warm Cool A: -25. Warm Cool Balance A: +10

Offset White B: ON.  Warm Cool B: -25. Warm Cool Balance A: +10

Black: Master Black: -3.  Gamma: HG4 .  White Clip: OFF.  Aperture : OFF

Matrix: ON. Adaptive Matrix: Off. Preset Matrix: ON. Preset Select: Cinema. User Matrix: ON. Level: -10. Phase: 0.

R-G: +61. R-B: +29. G-R: -6. G-B: -35. B-R: +21. B-G: -5.

MultiMatrix: ON

B: Hue -18, Saturation 0.

B+: Hue +5, Saturation 0.

MG-: Hue +5, Saturation 0.

MG: Hue +5 Saturation -7.

MG+: Hue 0, Saturation -3.

R: Hue -21, Saturation +65.

R+: Hue +0, Saturation +99.

YL-: Hue +39, Saturation +44

YL: Hue 0, Saturation 0.

YL+ Hue +20, Saturation -10.

G-: Hue -71, Saturation 0.

G: Hue -61, Saturation +10.

G+: Hue -23, Saturation +11

CY: Hue -40, Saturation +9.

CY+:Hue -22, Saturation +54.

B-:Hue +20, Saturation -5.

Scene File 9: AC-Minus-G1

A hand scene file to have for shooting under mixed lights or low quality lights where there is too much green. By using a combination of the FL-Light colour matrix and a custom preset matrix this profile reduces the some problematic green colour cast that can be present. It uses Hypergamma 3 to give a more pleasing highlight roll off and increased dynamic range without reducing the low light performance. Great for office interviews! I recommend setting zebras to 62% for skin tones and recording white (white card) at between 75 and 80% for the best results.

Black: Master Black: -3.  Gamma: HG3 .  White Clip: OFF.  Aperture : OFF

Matrix: ON. Adaptive Matrix: Off. Preset Matrix: ON. Preset Select: FL Light. User Matrix: ON. Level: 0. Phase: 0.

R-G: +10. R-B: +8. G-R: -12. G-B: -9. B-R: -5. B-G: -15.

 

Here are the files ready to load into you own FS7 or FS7II. Click on the link below to get to the download page where you can download a zip file with all of the scene files already in the correct folder structure to place on an SD card. Simply unzip the download and copy the “private” folder to the root of an empty SD card. These scene files have taken a lot of time and effort to develop. I offer them without charge for your own use. If you find them useful please consider buying me a coffee or other drink.


Type



pixel Scene files for the Sony PXW-FS7M2.

If you already have scen files on your own SD card then you can copy my files from either:

PRIVATE/SONY/PRO/CAMERA/PXW-FS7/

or

PRIVATE/SONY/PRO/CAMERA/PXW-FS7M2

To the same folder your own SD card. You can re-number the if you need to. Once the files are on an SD card insert the SD card in to the camera. Go to the “File” menu and “Scene File” and choose “Load from SD Card”.

FS7 – FS7M2 Scene Files

Want to know more – why not come to a workshop:

How does the Panasonic EVA1 stack up against the Sony FS7 and FS5?

This is a question a lot of people are asking. As I’ve mentioned in other recent posts, sensors have reached a point where it’s very difficult to bring out a camera where the image quality will be significantly different from any other on the market for any given price point. Most differences will be in things like codec choices or trading off a bit of extra resolution for sensitivity etc. Other differences will be in the ergonomics, lens mounts and battery systems.

So it’s interesting to see what Keith Mullin over at  Z-Systems thought of the EVA1. Keith knows his stuff and Z-Systems are not tied to any one particular brand.

Overall as expected there isn’t a huge difference in image quality between any of the 3 cameras. The EVA1 seems weaker in low light which is something I would have predicted given the higher pixel count. The dual ISO mode seems not to be anywhere near the same as the really very good dual ISO mode in the Varicam LT.

Why not take a look at the full article and video for yourself. http://zsyst.com/2017/12/panasonic-eva1-first-look/

 

Want to shoot direct to HDR with the PXW-FS7, PMW-F5 and F55?

Sony will be releasing an update for the firmware in the Sony PXW-FS5 in the next few days. This update amongst other things will allow users of the FS5 to shoot to HDR directly using the Hybrid Log Gamma HDR gamma curve and Rec2020 color. By doing this you  eliminate the need to grade your footage and could plug the camera directly in to a compatible HDR TV (the TV must support HLG) and see an HDR image directly on the screen.

But what about FS7 and F5/F55 owners? Well, for most HDR productions I still believe the best workflow is to shoot in S-Log3 and then to grade the footage to HDR. However there may be times when you need that direct HDR output. So for the FS7, F5 and F55 I have created a set of Hybrid Log Gamma LUT’s that you can use to bake in HLG and Rec2020 while you shoot. This gives you the same capabilities as the FS5 (with the exception of the ability to add HLG metadata to the HDMI).

For a video explanation of the process please follow the link to my new Patreon page where you will find the video and the downloadable LUT’s.

What’s the difference between raw and S-Log ProRes – Re: FS5 raw output.

This is a question that comes up a lot.

Raw is the unprocessed (or minimally processed) data direct from the sensor. It is just the brightness value for each of the pixels, it is not a color image, but we know which color filter is above each pixel, so we are able to work out the color later. In the computer you take that raw data and convert it into a conventional color video signal defining the gamma curve and colorspace in the computer.  This gives you the freedom to choose the gamma and colorspace after the shoot and retains as much of the original sensor information as possible.Of course the captured dynamic and color range is determined by the capabilities of the sensor and we can’t magically get more than the sensor can “see”. The quality of the final image is also dependant on the quality of the debayer process in the computer, but as you have the raw data you can always go back and re-encode the footage with a better quality encoder at a later date. Raw can be compressed or uncompressed. Sony’s 12 bit FS-raw when recorded on an Odyssey or Atomos recorder is normally uncompressed so there are no additional artefacts from compression, but the files are large. The 16 bit raw from a Sony F5 or F55 when recorded on an R5 or R7 is made about 3x smaller through a proprietary algorithm.

ProRes is a conventional compressed color video format. So a ProRes file will already have a pre-determined gamma curve and color space, this is set in the camera through a picture profile, scene file or other similar settings at the time of shooting. The quality of the ProRes file is dependant on the quality of the encoder in the camera or recorder at the time of recording, so there is no way to go back and improve on this or change the gamma/colorspace later. In addition ProRes, like most commonly used codecs is a lossy compressed format, so some (minimal) picture information may be lost in the encoding process and artefacts (again minimal) are added to the image. These cannot easily be removed later, however they should not normally present any serious problems.

It’s important to understand that there are many different types of raw and many different types of ProRes and not all are equal. The FS-raw from the FS5/FS7 is 12 bit linear and 12 bit’s are not really enough for the best possible quality from a 14 stop camera (there are not enough code values so floating point math and/or data rounding has to take place and this effects the shadows and low key areas of the image). You really need 16 bit data for 14 stops of dynamic range with linear raw, so if you are really serious about raw you may want to consider a Sony F5 or F55. ProRes is a pretty decent codec, especially if you use ProResHQ and 10 bit log approaches the quality of 12 bit linear raw but without the huge file sizes.  Incidentally there is very little to be gained by going to ProRes 444 when recording the 12 bit raw from an FS5/FS7, you’ll just have bigger files and less record time.

Taking the 12 bit raw from an FS5 and converting it to ProRes in an external recorder has potential problems of it’s own. The quality of the final file will be dependant on the quality of the debayer and encoding process in the recorder, so there may be differences in the end result from different recorders. In addition you have to add a gamma curve at this point so you must be careful to choose the correct gamma curve to minimise concatenation where you add the imperfections of 12 bit linear to the imperfections of the 10 bit encoded file (S-Log2 appears to be the best fit to Sony’s 12 bit linear raw).

Despite the limitations of 12 bit linear, it is normally a noticeable improvement over the FS5’s 8 bit internal UHD recordings, but less of a step up from the 10 bit XAVC that an FS7 can record internally. What it won’t do is allow you to capture anything extra. It won’t improve the dynamic range, won’t give you more color and won’t enhance the low light performance (if anything there will be a slight increase in shadow noise and it may be slightly inferior in under exposed shots). You will have the same dynamic and color range, but recorded with more “bits” (code values to be precise). Linear raw excels at capturing highlight information and what you will find is that compared to log there will be more textures in highlights and brighter parts of your captured scenes. This will become more and more important as HDR screens are better able to show highlights correctly. Current standard dynamic range displays don’t show highlights well, so often the extra highlight data in raw is of little benefit over log. But that’s going to change in the next few years so linear recording with it’s extra highlight information will become more and more important.

What does Rec-2020 on the PXW-FS7 II really mean?

So, as you should have seen from my earlier post Sony has included Rec-2020 as a colorspace in custom mode on the new FS7 II. But what does this mean and how important is it? When would you use it and why?

Recommendation ITU BT.2020 is a set of standards created by the International Telecommunications Union for the latest and next generation of televisions. Within the standard there are many sub-standards that define things such as bit depth, frame size, frame rates, contrast, dynamic range and color.

Sony-Colorspaces-1024x815 What does Rec-2020 on the PXW-FS7 II really mean?
The colorspaces that Sony’s cameras can capture.

The Rec-2020 addition in the the FS7 II specifically refers to the color space that is recorded, determining the range of colors that can be recorded and the code values used to represent specific tones/hues.

First of all though it is important to remember that the FS7 II shares the same sensor as the original FS7, the FS5 and F5. Sony has always stated that this sensor is essentially a “709” sensor. The sensor in Sony’s PMW-F55 can capture a much greater color range (gamut) than the F5, FS5 and FS7, only the F55 can actually capture the full Rec-2020 color space, the FS7 II sensor cannot. It’s very difficult to measure the full color gamut of a sensor, but from the tests that I have done with the F5 and FS7 I estimate that this sensor can capture a color gamut close to that of the DCI-P3 standard, so larger than Rec-709 but not nearly as large as Rec-2020 (I’d love someone to provide the actual color gamut of this sensor).

So given that the FS7 II’s sensor can’t actually see colors all that far beyond Rec-709 what is the point of adding Rec-2020 recording gamut as the camera can’t actually fill the recording Gamut? Similarly the F5/FS5/FS7 cannot fill S-Gamut or S-Gamut3.

The answer is – To record the colors that are captured with the correct values. If you capture using Rec-709 and then play back the Rec-709 footage on a Rec-2020 monitor the colors will look wrong. The picture will be over saturated and the hues slightly off. In order for the picture to look right on a Rec-2020 monitor you need to record the colors at the right values. By adding Rec-2020 to the FS7 II Sony have given users the ability to shoot Rec-2020 and then play back that content on a Rec-2020 display and have it look right. You are not capturing anything extra (well, maybe a tiny bit extra), just capturing it at the right levels so it at least looks correct.

As well as color, Rec-2020 defines the transfer functions, or gamma curves to you and me, that should be used. The basic transfer function is the same as used for Rec-709, so you can use Rec-709 gamma with Rec-2020 color to get a valid Rec-2020 signal. For full compatibility this should be 3840×2160 progressive and 10bit (the Rec-2020 standard is a minimum of 10bit and as well as 3840×2160 also includes 7680×4320).

But, one of the hot topics right now in the high quality video world is the ability to display images with a much greater dynamic range than the basic Rec-709 or Rec-2020 standards allow. There is in fact a new standard called Rec-2100 specifically for HDR television. Rec-2100 uses the same colorspace as Rec-2020 but then pairs that bigger colorspace with either Hybrid Log Gamma or ST2084 gamma, also know as PQ (Perceptual Quantiser). As the FS7 II does not have PQ or HLG as gamma curves you cannot shoot material that is directly compatible with Rec-2100. But what you can do is shoot using S-Log2/S-Log3 with S-Gamut/S-Gamut3/SGamut3.cine which will give you the sensors full colorspace with the sensors full 14 stop dynamic range. Then in post production you can grade this to produce material that is compatible with the Rec-2100 standard or the Rec-2020 standard. But of course you can do this with an original FS7 (or F5) too.

So, when would you actually  use the FS7 II’s Rec-2020 colorspace rather than S-Log/S-Gamut?

First of all you don’t want to use it unless you are producing content to be shown on Rec-2020 displays. Recording using Rec-2020 color gamut and then showing the footage on a Rec-709 display will result in washed out colors that don’t look right.

You would probably only ever use it if you were going to output directly from the camera to a monitor that only supports Rec-2020 color or for a project that will be specifically shown on a standard dynamic range Rec-2020 display. So, IMHO this extra colorspace is of very limited benefit. For most productions regular Rec-709 or S-Log/S-Gamut will still be the way forward unless Sony add Hybrid Log Gamma or PQ gamma to the camera as well. Adding HLG or PQ however has problems of it’s own as the existing viewfinders can only show standard dynamic range images, so an external HDR capable monitor would be needed.

Rec-2020 recording gamut is a nice thing to have and for some users it may be important. But overall it’s not going to be a deal breaker if you only have a standard FS7 as the S-Log workflow will allow you to produce Rec-2020 compatible material.