This has cropped up a few times in the comments and in various user groups so I thought I would go through what you need to do to use a B4 2/3″ lens with the FX9’s S16 2K scan mode.
Not all B4 2/3″ lenses will directly cover the FX9’s Super 16mm sized 2K scan mode as 2/3″ is smaller than S16. 2/3″ lenses are designed to cover 8.8 x 6.6mm and S16 is 12.5 x 7mm. Some lenses might just about cover this as is, with minor vignetting, but most won’t.
The Sony LA-EB1 includes an optical expander that compensates for this (I think it’s about a 1.35x). With the LA-EB1 all B4 2/3″ lenses should work without vignetting and in addition when an ALAC compatible lens is connected to the LA-EB1 the camera will support the ALAC function which reduces many of the aberrations typically seen with B4 lenses. The LA-EB1 needs a power feed (14.4v) to work correctly and to power the lens. It is supplied with a 4 pin hirose cable that is designed to be plugged into the 4 pin hirose power socket on the XDCA-FX9. This also provides the record trigger signal to the camera. If you don’t have an XDCA-FX9 then you will need to source a 4 pin hirose to D-Tap or similar power cable.
If you have a mount adapter that does not have any optical expansion such as the cheaper MTF B4 to E-Mount adapter (MTB4SEM approx $400), if the lens has a 2x extender you can use the lenses extender if the lens doesn’t cover without it. The more expensive MTF MTB4SEMP (approx $1,200) includes an optical expander and with this adapter all B4 lenses should cover the S16 area without needing to use the lenses extender. To get the zoom servo working you will need an adapter that can provide 12v to the lenses 12pin connector.
Whatever lens or adapter you choose, the lens needs to be an HD lens. The better the lens the better the end result, I know that may seem obvious but when you are using either an adapter with an included optical expander or having to use the lenses 2x extender to eliminate vignetting with a straight through adapter any imperfections in the lens and any softness becomes quite obvious. Get a really good lens on a good adapter and the images are perfectly respectable, but a poor lens on an adapter will probably dissapoint.
Tag Archives: FX9
FX9 Version 3 Firmware Released.
Sony have today release the version 3 update for the FX9. This is a significant upgrade for the FX9 and I highly recommend all users update their cameras.
The update process is robust and provided you follow the instructions in the PDF guide that is included in the update download package you should not have any problems.
EDIT: I WILL SAY THIS AGAIN – YOU MUST FOLLOW THE INSTRUCTIONS INCLUDED IN THE DOWNLOAD PACKAGE. DO NOT SKIP ANY OF THE STEPS IN THE INSTRUCTIONS. I’m seeing lots of people with failed updates because they are formatting their SD cards on their computer or not turning off the cameras network functions. It’s all in the instructions, the instructions are there to help you, please follow them to the letter. The “root” of a card is the very, very bottom of the cards file structure. It is NOT a folder, anything on the “root” of a card will not be inside a folder of any sort, the root is the bit of the card where the first folders will be, in the case of an SD card formatted in the FX9 the root is where you will find the “PRIVATE” folder. The “root” is NOT the XDROOT folder. And if something does go wrong the instructions tell you how to recover.
Do be aware that when you start the update process the cameras LCD screen will go blank for around 10 minutes and the only clue that all is good will be a flashing red tally light. Just leave the camera alone, go and do something else and come back an hour later. The upgrade will also appear to stall at around the 80% mark. Again, just be patient and wait for the update complete message before turning off the camera.
There are a lot of new features in version 3 but the three that I think most are going to like the most are the Real-Time tracking AF (aka touch tracking), the Anamorphic monitoring modes and the Super 16mm 2K scan mode.
REAL TIME TRACKING AF
The Real Time tracking allows you to use the viewfinders touch screen to touch where you want the camera to focus. A white box will appear where you touch and then the camera will track the touched object while it stays with the frame. To cancel the touch tracking touch on the grey cancel box that appears in the top left of the viewfinder.
In the image above the camera is in Face/Eye priority mode. As the real time tracking AF over-rides the other AF modes, by touching on the book on the book shelf (circled in red) the AF is now focussing on the book and will track the book if the camera pans or if the book were to move through the shot. If the book were to move out of the shot the AF will revert to Face/Eye AF.
When used in conjunction with the Face/Eye AF, if you touch on a face the AF will prioritise that face and track it. If the person is facing the camera and can be identified as an individual face, the face gets saved and a “*” will appear next to the Face AF symbol top left of the VF.
If the person turns away from the camera the focus will then track the persons head, if they turn back towards the camera it tracks their face again. It is even possible to start by touching on the back of a persons head and then as they turn towards the camera the face/eye AF takes over.
The way the camera “registers” faces is changed from previous firmware versions. As above, to save a face simply touch on a face. Touch a different face to save a different face. When a face has been saved a * will appear next the the Face/Eye AF symbol.
In the image below the face has been selected by touching on it and is now saved (note the * symbol circled in red). Not also the tracking symbol indicating that BOTH Face/Eye AF and Tracking are in use.
Whenever you stop the real time tracking the saved face is removed from the camera.
If you are using Face/Eye ONLY AF then normally the camera will only focus on faces/eyes, but if you touch on an object that isn’t a face then the camera will focus on this object. If you touch on a face then the camera will only focus on that particular face and the AF will halt if the camera can’t see that particular face until you stop the real time tracking AF.
As well as the tracking stop button (top left of the VF, look like a grey box) If you have AF assist enabled, turning the focus ring on the lens will stop the tracking AF. Real-time tracking AF will also stop when a touched object that is not a face leaves the frame or when a button assigned with the Push AF/Push MF function is pressed.
Real-time tracking can also be used when the cameras AF switch is set to MF. If in the menu, under shooting settings, focus, the “Touch Function in MF” setting is set to ON, The real-time touch tracking auto focus will also work when the AF switch on the side of the camera is set to MF. This allows you to use an autofocus lens to focus manually but then instantly switch to real time tracking AF simply by touching the LCD screen. For this to work if the lens has an AF/MF switch the switch on the lens must be set to AF. If using the 28-135mm lense the focus ring must be in the forwards position.
Real time tracking works across the entire frame regardless of the chosen AF frame area. Any objects being tracked must be distinct from the background. Textured, coloured or detailed objects are tracked more easily than plain objects. When using Face/Eye AF not all faces can be saved. To successfully save a face it needs to be facing the camera directly and sufficiently distinct that the camera can identify the eyes, nose and mouth.
ANAMORPHIC MODE
The anamorphic mode is a basic anamorphic monitoring mode for the LCD viewfinder. It has no effect on the recorded files or the SDI/HDMI outputs.
It provides a 1.3x or 2x de-squeeze. The 2x desqueeze function is tailored for 2x anamorphic lenses designed to be used with 35mm film. To use these lenses the camera must be set to 6K Full Frame scan to gain the correct sensor height. This means that when you use a 2x 35mm film anamorphic lens the sensor scan is wider than it really needs to be so there will be some vignetting at the sides of the frame. The 2x de-squeeze function takes this into account and not only de-squeezes the image but also crops the sides to emulate how the footage will look after post production.
If you are using 1.3x lenses then you can use either the Full Frame 6K scan, the FF 5k crop or the S35 4K scan modes, but for 2x anamorphic lenses you will need to use FF 6K scan.
S16 2K Crop.
The S16 2K crop mode allows you to use just the center Super 16mm sized 2K scan area. This mode is actually very useful for shooting at high frame rates above 60fps because unlike the FF 2K or S35 2K scan modes, this mode is using every single pixel within the scan area. As a result there are none of the image artefacts common when shooting at high frame rates using FF 2K or S35 2K. The 2.5x crop (compared to FF) does mean that for wide shots you will need a very wide lens. But where you can use it, this mode is great for better quality slow motion.
The other use for this scan mode is with Super 16mm lenses or with B4 2/3″ ENG lenses via suitable adapters. The image quality in this mode on the FX9 is a little better than the similar mode on the FS7. But you do need to remember that this is a 2K scan, so you will have a little under HD resolution. In addition the cameras noise appears worse in this mode because you are enlarging fewer pixels to fill the screen, so the noise isn’t as fine or refined as in FF 6K or S35 4K. So where possible you want to make sure you use a nice bright exposure for the best results.
The images below were shot with the same 16x ENG zoom lens at its widest and longest focal lengths.
Here is the full list of new features:
- S700 Protocol over Ethernet
- B4 lens support
– S16 scanning mode (up to FHD 180fps)
– B4 lens control using with LA-EB1
– ALAC (Auto Lens Aberration Correction) function - Assignable Center Scan
- Anamorphic lens support
- Clip Naming (Cam ID + Reel#)
- Real-time Tracking (touch tracking auto focus)
- Additional items can be modified in the Status Screen
- SR Live for HDR metadata support
- Recording Proxy Clip Real-time Transfer
- Camcorder Network Setup using Smartphone App
- Remote control using smartphone over USB tethering
- USB tethering activated using iOS14 iPhone and iPad
*Network feature above also support C3 Portal (only available in specific countries)
You will find the version 3 download files here: https://pro.sony/en_GB/support-resources/pxw-fx9/software
Free Sony FX6 and FX3 Tutorial Videos
Hidden away in the Sony Alpha Academy are 6 tutorial videos that I made for the the Sony Cinemaline cameras, most notably the FX6 and FX3. These videos mainly cover the FX6 but information on the FX3 (and FX9) is also included in several of the videos..
The 6 videos cover the following subjects:
FX6 – Scan Modes and Codecs (including information of recording media)
FX6/FX3 – What is S-Cinetone.
FX6 – How to use the Cine-EI mode to shoot S-Log3.
FX6/FX3 – Slow Motion and Timelapse.
FX6/FX3 – Exposure tools (covering waveform and histogram as well as Zebras)
FX6/FX3 – Post Production Stabilisation.
To watch these video you will need to setup a free account with Sony. Then go to the Alpha Academy page linked below and scroll down to the FilmMaking section and then open the My Sony Expert tab.
New LUTs from Sony
I was asked by Sony to produce a couple of new LUT’s for them. These LUT’s were inspired by many recent blockbuster movies and have been named “Space Adventure” and “Super Hero”.
Both LUT’s are available for free and there is a link on the page linked below that will allow you to obtain them.
Rather than explain the two different looks here go to this page on the Sony website https://pro.sony/en_GB/filmmaking/filmmaking-solutions/full-frame-cinematic-look
Scroll down to where it says “Stunning Cinematic Colour” and there you will find a video called “Orlaith” that shows both LUT’s applied to the same footage.
Orlaith is a gaelic name and it is pronounced “orla”. It is the name of a mythical golden princess. The short film was shot on a teeny-tiny budget in a single evening with an FX3 and FX6 using S-Log3 and SGamut3.cine. Then the LUTs were applied directly to the footage with no further grading.
PXW-FX9 Version 3 Firmware Update Latest News
No, it hasn’t been released yet. And it’s now not expected to arrive before the end of November. But it will be worth the wait.
We already knew about some of the new features but there is much more to this release than first announced. Let’s take a look:
Touch to focus, focus tracking: Yes, you heard it right. You will be able to use the touch sensitive LCD to touch on an object in the shot and then the camera will track that object as it moves around the shot. A box will appear around the touched object and you will be able to monitor what the AF is focussing on by looking at what the tracking box is over. This is a feature available on the A7S3 and FX3 that is VERY useful.
Anamorphic De-Squeeze. It will become much easier to shoot anamorphic with the FX9. When shooting Anamorphic the image produced by the lens is squeezed horizontally, and that’s what you record. But to monitor it correctly you then need to de-squeeze it by squashing it vertically by the correct amount. The V3 firmware update will allow the image to be squashed vertically (de-squeezed) for the LCD viewfinder so you can view with the included VF in the correct widescreen aspect ratio. Do note however that the SDI and HDMI outputs will NOT be de-squeezed, so to monitor externally you will need a monitor with de-squeeze, but most of them have this these days.
Super 16 Scan Modes: The camera will gain a 2K center scan mode that can be used to shoot at up to 180fps in full HD. Using the center scan mode for slow motion above 60fps will eliminate the aliasing issues currently seen when using the 2K FF or 2K S35 scan modes. Additionally you will be able to use Sony’s 2/3″ B4 lens adapter. When using the B4 adapter the camera will support ALAC which corrects for chromatic aberrations in lenses that support this feature.
Switch Scan Modes via Assignable Button: This has been something on everyone’s wish lists for years. Now at last you will be able to set up an assignable button to switch scan modes.
Add Camera ID and Reel Numbers to Clip Names: You will be able to use clip names that are prefixed by a camera ID number and a reel number similar to the clip naming system on the FS7.
Modify the Status Page List: This function allows you to remove pages from the status page menu. So you will be able to remove the pages you rarely use.
DC IN Alarm: Don’t get too excited just yet, but in V3 you will be able to set a low voltage alarm for the cameras DC input as well as the extension units DC input. This does NOT mean that there will be a low voltage warning with the current 3rd party V-Lock battery adapters as these convert the battery voltage to a fixed 19.5v supply that never changes. But it does mean that a clever manufacturer could now design a V-Lock adapter that could reduce it’s output voltage when the voltage of the V-Lock battery gets low allowing you to have an alarm in the camera before the battery cuts off.
Proxy Upload while recording: Currently you cannot upload proxies while recording. This will be improved in V3 and the camera will be able to upload proxies in the background while you are recording.
Zero Focus Distance function: When working with a lens that shows the focus distance on the LCD screen you will be able to focus on an object and then “zero” the focus distance. Then as you change the focus distance the the screen will display a +/- value that is how far from zero the focus is. You will be able to use this for a pull focus. Focus on the end object and set the focus distance to zero. Now focus on the start object. To pull focus turn the focus ring so you are back at zero again. Not actually sure how useful this will be, but hey – it isn’t costing us anything.
Change Network Settings via Mobile Phone App: You will be able to use a mobile phone to change the cameras network settings making it easier to enter addresses and passwords of FTP servers etc.
USB Phone tethering: you will be able to connect a couple of mobile phones to the camera via USB to use it them as modems for internet streaming (I believe this is via the USB ports on the top of the XDCA-FX9).
LCD Gamma Adjustments for SR Live: SR live is a type of HDR workflow developed for live productions that will be broadcast in both standard dynamic range and high dynamic range. This setting allows you to change the gamma of the LCD screen between SDR and HDR range when shooting using HLG in the HDR mode. This allows you to preview either what a viewer will see watching in SDR or a good approximation of what a viewer viewing in HDR will see.
S700 Remote Control: The camera will be able to be controlled remotely using s700 protocols (via ethernet).
Important Firmware Update For The FX9
A few days ago Sony quietly released a new important firmware update for the PXW-FX9. Firmware version 2.10 adds the long awaited 4K 120fps raw function to the FX9 (you do still need the XDCA-FX9) but also importantly includes some change the the daylight white balance settings.
From my before and after testing it appears that a change has been made to the daylight white balance preset settings. For some time it has been apparent that if you used the white balance presets in the daylight range (4000K and higher) that the FX9 has a tendency to accentuate any green in the image. If you white balance of a white card this tendency is not there.
The new preset white balance settings now provide a much more neutral white balance with less green bias. This should also help those that were suffering from green fringing in extreme contrast shots as the reduced green bias will stop the camera from accentuating chromatic aberration as it did before. It won’t eliminate the chromatic aberration, but it won’t be nearly as obvious.
The first image was taken before doing the firmware update using a preset of 5500K. This test was done in a bit of a hurry as it was threatening to rain, but I wanted to use real daylight.
The second image, below, was taken after the firmware update (unfortunately the focus shifted slightly between the two shots, sorry). But you can clearly see that even though the white balance settings are the same and the same 5500K preset used this image is less green.
It is a subtle difference, but if you look at the wood panels you can see a difference. To help you see the difference here is a wipe between the before and after clips with the saturation boosted to make it more obvious.
As you can see this isn’t an “in your face” difference. But it is still none the less an important improvement as it makes it easier to match the FX9 to the FX6 and FX3 if you are using a preset white balance. I would still recommend white balancing off a white card for all cameras wherever possible as this will still normally provide the best results as it helps neutralise any lens or calibration differences. Whether you are shooting using S-Cinetone as in the examples here or using S-Log3, the new white balance preset provides in my opinion a much better colour response.
HOWEVER it’s important to consider that it will make cameras with version 2.10 and later look different to FX9’s with earlier firmware versions.
The firmware update can be downloaded via the link below. It took around 35 minutes for my FX9 to complete the update. The process is easy but when the camera gets to 80% complete it will appear that the update has stalled. It stays at 80% for around 10-15 minutes with no indication that the update is still continuing. So don’t turn the camera off thinking it’s stuck!!! Be patient and give it time to complete.
https://pro.sony/en_GB/support-resources/pxw-fx9/software/
FX9 to get Anamorphic In Firmware Version 3.
Sony today release an update covering many things. But of particular interest to FX9 and FX6 owners was news that both the FX6 and FX9 will get firmware updates to add 120fps raw. For the FX9 you will still need the XDCA-FX9 and to be honest this has always been promised, but it’s good to see it hasn’t been forgotten about. This update should be out next month.
In addition the FX9 will gain the ability to shoot Anamorphic in the version 3 firmware update which will be released later in the year. There will be both 1.3x and 2x anamorphic desqueeze as well as the addition cinemascope frame lines. This is on top of the previously announced 2K super 16mm sized center scan mode with support for B4 ENG lenses and s700PTP control over TCP/IP.
You will find the full announcement here: https://sonycine.com/articles/firmware-updates-announced-for-fx9-and-fx6-cinema-cameras/
How Good Is The Raw From An FX9 Compared To The F55?
This is a very good question that came up in one of the F5/F55/FX9 facebook groups that I follow. The answers are also mostly relevant to users of the FX6, FX3 and the A7SIII.
There were two parts to it: Is the FX9’s raw out as good as the raw from the F5/F55 and then – do I really need raw.
There were two parts to it: Is the FX9’s raw out as good as the raw from the F5/F55 and then – do I really need raw.
In terms of image quality I don’t think there is any appreciable difference, going between the raw from an FX9 and the raw from an F5/F55 is a sideways step.
The F5/F55 with either Sony Raw or X-OCN offer great 16 bit linear raw in a Sony MXF package. The files are reasonably compact, especially if you are using the R7 and X-OCN. There are some compatibility issues however and you can’t use the Sony Raw/X-OCN in FCP-X and the implementation in Premier Pro is poor.
The 16 bit out from the FX9/XDCA-FX9 gets converted to 12 bit log raw by the Atomos recorders, currently the only recording options – but in reality you would be extremely hard pushed to really see any difference between 16 bit linear raw and 12 bit log raw from this level of camera.
The F5/F55 with either Sony Raw or X-OCN offer great 16 bit linear raw in a Sony MXF package. The files are reasonably compact, especially if you are using the R7 and X-OCN. There are some compatibility issues however and you can’t use the Sony Raw/X-OCN in FCP-X and the implementation in Premier Pro is poor.
The 16 bit out from the FX9/XDCA-FX9 gets converted to 12 bit log raw by the Atomos recorders, currently the only recording options – but in reality you would be extremely hard pushed to really see any difference between 16 bit linear raw and 12 bit log raw from this level of camera.
Recording the 12 bit log raw as ProRes Raw means that you are tied to just FCP-X, Premiere Pro (poor implementation again) and Scratch. The quality of the images that can be stored in the 2 different raw formats is little different, 16 bit linear has more code values but distributed very inefficiently. 12 bit log raw has significantly fewer code values but the distribution is far more efficient. AXS media is very expensive, SSD’s are cheap. AXS card readers are expensive, SSD adapters are cheap. So there are cost implications.
Personally I feel the reduced noise levels from the FX9 makes footage from the FX9 more malleable than footage from the F5/F55 and if you are shooting in FF6K there is more detail in the recordings, even though they are downsampled to 4K raw. But the FF6K will have more rolling shutter compared to an F55/F5.
Personally I feel the reduced noise levels from the FX9 makes footage from the FX9 more malleable than footage from the F5/F55 and if you are shooting in FF6K there is more detail in the recordings, even though they are downsampled to 4K raw. But the FF6K will have more rolling shutter compared to an F55/F5.
Working with Sony Raw/X-OCN in Resolve is delightfully easy, especially if you use ACES and it’s a proper grading package. If you want to work with ProResRaw in Resolve you will need to use Apple Compressor or FCP-X to create a demosaiced log file, which even if you use ProRes444 or XQ not the same as working from the original raw file. For me that’s the biggest let down. If I could take ProResRaw direct into Resolve I’d be very happy. But it is still perfectly possible to get great footage from ProResRaw by transcoding if you need to.
As to whether you need raw, only you can answer that fr yourself. There are many factors to consider. What’s your workflow, how are you delivering the content. Will the small benefit from shooting raw actually be visible to your clients?
Are you capturing great content – in which case raw may give you a little more, or are you capturing less than ideal material – in which case raw isn’t going to be a get out of jail card. Raw of any flavour works best when it’s properly exposed and captured well.
I would suggest anyone trying to figure out whether they need raw or not to start by to grading the XAVC-I from the FX9 and see how far you can push that, then compare it to the raw. I think may be surprised by how little difference there is, XAVC-I S-Log3 is highly gradable and if you can’t get the look you want from the XAVC-I raw isn’t going to be significantly different. It’s not that there is anything wrong with raw, not at all. But it does get rather over sold as a miracle format that will transform what you can do. It won’t perform those miracles, but if everything else has been done to the highest possible standards then raw does offer the very best that you can get from these cameras.
I would suggest anyone trying to figure out whether they need raw or not to start by to grading the XAVC-I from the FX9 and see how far you can push that, then compare it to the raw. I think may be surprised by how little difference there is, XAVC-I S-Log3 is highly gradable and if you can’t get the look you want from the XAVC-I raw isn’t going to be significantly different. It’s not that there is anything wrong with raw, not at all. But it does get rather over sold as a miracle format that will transform what you can do. It won’t perform those miracles, but if everything else has been done to the highest possible standards then raw does offer the very best that you can get from these cameras.
As a middle ground also consider non raw ProRes. Again the difference between that and XAVC-I is small, but it may be that whoever is doing the post production finds it easier to work with. And the best bit is there are no compatibility issues, it works everywhere.
But really my best recommendation is to test each workflow for yourself and draw your own conclusions. I think you will find the differences between each much smaller than you might assume. So then you will need to decide which works for you based on cost/effort/end result.
Sometimes best isn’t always best! Especially if you can get to where you need to be more easily as an easy workflow gives you more time to spend on making it look the way you want rather than fussing with conversions or poor grading software.
How Do You Expose S-Cinetone with the FX6/FX3/A7SIII
Lots of people have been asking about how to expose S-Cinetone, whether with the FX9, FX6, A7SIII or the FX3.
The short answers is: So that it looks nice!
S-Cinetone has a variable toe and knee. So exposing it brighter results in not only a brighter image but also an image with flatter skin tones and less shadow contrast, overall looking more video like.
Exposing a little bit darker results in a more contrasty film like image. Faces and skin tones have more texture. There is no one optimum exposure level. A white card could be anywhere between 78% and 88% depending on the look you want. Typical skin tones will vary from between anywhere between 55% and 75%.
Personally I like the way S-Cinetone looks when it’s exposed with Skin tones at around 63% and white at around 81%.
See the video I on S-Cinetone on the FX9 for more details as it all applies equally to the FX9 and FX6 as well as the A7SIII and FX3. The only small difference is that the base ISO’s are a little different between each camera.
Which Sony ISO RatingS Are Correct?
In the course of my tests with the FX3 and comparing it with the FX6 and FX9 I discovered a strange anomaly with the FX3 and A7SIII ISO ratings when compared to the FX6 and FX9.
The FX3’s default picture profile is PP11 and S-Cinetone. If you have an FX6 or FX9 these cameras also default to S-Cinetone in SDR mode. In the FX6 and FX9 the base ISO for S-Cinetone is 320 ISO. Therefore you would assume that if you also set the A7SIII or the FX3 to 320 ISO and expose all the cameras the same, same aperture, shutter etc that the exposures would match.
BUT THE EXPOSURES DON’T MATCH!!
The FX3 and the A7SIIII are just over 1 stop brighter than the FX6 and FX9 when all the exposure settings are matched. I tested all the cameras with the same lens to ensure this wasn’t a lens issue, but it isn’t the lens.
I then went on to test other gamma/picture profile settings and I found a just over 1 stop difference between the FX3 and my FX6/FX9 in any similar combination EXCEPT S-LOG3!
When using Picture Profile 2 on the FX3 which is uses Sony’s “Still” gamma and then using the “Still” Profile on the FX6 there is a difference of around 1 stop. If I set the FX3 to PP3 (ITU-709) and the FX6 to ITU-709 then the difference is again around 1 stop, in every case the FX3 is brighter except when you select S-Log3 where the FX3 and the FX6/FX9 match almost perfectly!
I find this very strange. They should not be different. My light meter suggests to me that the FX6/FX9 are correct.
Comparing to my light meter I believe the FX6/FX9 ratings to be correct and the FX3 to be between 1 and 1.3 stops brighter than it should be when using gammas that are not S-Log3. What I really don’t understand is why the FX3/A7SIII match the FX6/FX9 when using S-Log3 but do not match when using the other profiles, normally I would expect to see a consistent offset. This further makes leads me to be sure this is not a problem with my light meter, but something else.
I would love to hear from anyone else that’s able to take a look at the ISO ratings of the A7SIII and compare it with an FX6 or FX9.
The bottom line is – DON’T EXPECT TO PUT THE SAME EXPOSURE SETTINGS INTO BOTH AN FX3 AND AN FX6/FX9 AND GET THE SAME RESULTS, because you won’t, unless you are using S-Log3, then they match.
Also in the clip metadata I found that 0dB for S-Cinetone is 100 ISO, and whether this is a coincidence or not, if I set the FX3 to 100 ISO and the FX6 to 320 ISO and then match shutter speed and aperture then the exposures are very close.
This one has left me confused!!!!