Category Archives: Uncategorized

LUT Download Issues when using Chrome – Fixed

Some of you may have been having issues downloading my LUT’s and some other content. This was occuring due to Chrome blocking the download of any files it deems unsafe. I have installed some upgraded tools on my server and you should find that downloads will work again now. Do let me know if you ever encounter issues with the site. The sooner you let me know the sooner I can look into them. Thanks.

AKM Factory Fire – Will It Cause Supply ProBlems?

I wouldn’t normally write about something like this, a fire in a factory in Japan. But this particular factory was one of the worlds main sources of professional analog to digital converter chips used in all sorts of pro and high end audio gear as well as TCXO (temperature controlled crystal oscillators) used to control micro processors, timing circuits and many other devices. The audio chips, many of which were unique AKM designs  convert things like the analog audio from a microphone into the digital signal that a modern camcorder or audio recorder then records.  

The massive fire at the AKM factory burned for 84 hours and destroyed the factory at the end of October. It’s anticipated that it will take at least 6 months to get the factory running again. So far everyone is staying fairly tight lipped about the fire and it’s knock on effects and it’s not known who exactly depends on the AKM chips. But they are world leaders in this field and if you do use their audio chips it’s not simply a case of buying another chip from somewhere else as this would require the redesign of many circuit boards or other components.

Only time will tell whether this is really significant or not, but there are a lot of murmurs suggesting it could be a big problem for a lot of manufacturers of pro audio and video equipment.

https://www.prosoundnetwork.com/business/akm-factory-fire-shakes-up-pro-audio-industry

LCD Screen protector for the PXW-FS5.

One thing that has always worried me when travelling with my PXW-FS5 has been the fact that there is no protection for the LCD screen when in transit. There would be nothing worse than arriving for an importat shoot and finding the delicate LCD screen cracked or smashed.

No cover is supplied by Sony and I haven’t seen a proper cover for the LCD anywhere. So I decided to make my own. This is a simple plastic cover that snaps over the LCD screen when not in use. It helps protect it from scratches and other damage while you travelling, when the camera is in your camera bag or if you have to ship the camera anywhere. The prototype in these pictures was 3D printed on my home 3D printer and it works really well. There are small lugs that clip over the back of the LCD panel and when fitted it cannot slide off

IMG_0010-1024x768 LCD Screen protector for the PXW-FS5.
My clip on LCD protector fitted to my FS5 (This is a home printed version).

IMG_0012-1024x768 LCD Screen protector for the PXW-FS5.
The clip on cover designed to protect the LCD when in transit.

If you want one for yourself you can order them from my Shapeways store. Shapeways will professionally print them to order in a range of colours from a strong plastic material. The Shapeways prints are of far higher quality than can be achieved with most consumer 3D printers and the finish will be smooth and professional looking (unlike my prototype).

You can order these screen protection covers from my Shapeways store: https://www.shapeways.com/shops/alisterchapman

Venice Version 2 Firmware Available For Download.

The version 2 firmware is now available for download – ahead of schedule – from Sony. There is no need to send the camera in to Sony to perform the upgrade. You can do it yourself and it doesn’t take long.

Version 2 is a major update for Venice and it adds all kinds of new features including things like S&Q motion, the dual base ISO mode and the ability to load user LUT’s into the camera. Another key feature is that Version 2 enables the use of the E-Mount lens mount. This really opens up the camera, especially for full frame as the range of lenses that you can now use with Venice is vast, everything from high end cinema lenses to low cost DSLR lenses.

Some of the new features added in V2:

1.Added imager modes, 6K 17:9, 6K 1.85:1 and 4K 6:5

2.Added ISO2500 high sensitivity (Dual Base ISO)

3.E-mount lens support

4.Variable Frame rate (Select FPS)

5.Apple ProRes HD support

6.Simultaneous recording formats

7.User 3D LUT support

8.EI applied in S-Log3 output and recording

9.Surround view in 4K 17:9, 3.8K 16:9 and 4K 4:3 imager modes

10.High Quality Viewfinder focus magnification

11.Auto White Balance

12.High/Low key

13.VF False color

14.Camera remote control via Ethernet

15.Inside button operation for Playback

16.Eliminated restrictions on 6K 3:2 imager mode playback function

Before you perform the update I recommend watching this video which will take you through all the necessary steps.

The firmware can be downloaded from here: https://pro.sony/ue_US/support/software/venice-mpc-3610-software-v2

Guide to Hypegammas and Cinegammas Updated

I have just revisited a post I did some years ago about the correct way to expose Hypergammas and Cinegammas. I’ve revised some of it and updated some other bits. Hopefully the revisions make it  a little easier to understand why the brightness levels should be a little different and I’ve provided some suggested settings for zebra levels. You will find the revised guide here: Guide To Hypergamma and Cinegamma Exposure.

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.

The Sony PXW-Z90 – a compact 4K camcorder with auto focus at it’s best!

Normally when I travel up to arctic Norway for my annual Northern Lights expeditions I take a large sensor video camera. Last year it was the Sony FS5, which performed very well and gave me some great results. But this year I decided to down size and instead of taking a bulky camera I chose to take a pre-production sample of Sony’s diminutive new PXW-Z90 camcorder.

36B8104-683x1024 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
In Norway with the PXW-Z90.

On the outside the Z90 looks almost exactly the same as the older PXW-X70 camcorder. I’ve shot several videos with the X70 and it’s a great little camcorder that produces a very good image considering it’s small size. Being a new model I expected the Z90 to offer some small improvements over the X70, but what I didn’t expect was the very big improvements that the Z90 brings.

The Z90 is the first camcorder from Sony to incorporate a new design of sensor. It’s a 1″ type sensor, so like the X70, bigger than you used to find on small handycams, but not as big as the super 35mm sensor found in the FS5, FS7 etc. This is a nice size for this type of camera as it makes it possible to obtain a shallow depth of field by using the cameras built in ND filters (yes- it really does have ND filters built in) and a large aperture. Or if you need a deeper depth of field for easier focussing or run and gun then you can use a smaller aperture by switching out the ND filters. The maximum aperture of the zoom lens is f2.8 but it does stop down to f4 towards the telephoto end.

stacked-cmos The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
Sony’s new stacked CMOS EMOR RS sensor

This new sensor uses a new construction method that allows it to have several layers of electronics immediately below the imager pixels. The “stacked” sensor can as a result incorporate more image processing and a large memory area right under the pixels. This means that the sensor can be read out much more quickly than is normal for this type of camera and as a result rolling shutter is hugely reduced (I didn’t notice any in any of my footage).

As well as a reduction in rolling shutter compared to other similar sensors, the ability to do more on chip image processing appears to bring other advantages as the noise levels from this camera are very low indeed.

Z90-Night-scooter-ride-1024x576 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
Frame grab from a night time snow scooter ride. Shot at +15dB gain the noise is still very minor. (click on the image to view a larger version.

The low noise levels mean that this camera performs surprisingly well in low light. Adding in +6dB  was not a problem if needed. Even with +15dB of gin the images hold together very well. Clearly the camera is doing a fair bit of electronic noise reduction at higher gain levels and there is a slight increase in image smear as a result. Plus in certain circumstances the noise levels do rise, especially if you have large dark areas amongst in an otherwise brighter scene. In my sample footage during the night time snow scooter ride, which was shot at +15dB gain, you don’t see and noise over the snow, but you can see some grainy noise over the dark jacket of the snow scooter driver (see the frame grab above).  The fact that you can push the camera up to +15dB and in most cases get a pretty good image is very nice.

Z90-HLG-frame-grab-1024x576 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
Frame grab form a PXW-Z90 – Hybrid Log Gamma. Click on the image to see a larger version.

On top of good sensitivity you also have great dynamic range, more than the X70 and enough to make direct HDR shooting and log shooting possible with this tiny hand held camcorder. It doesn’t quite have the dynamic range of an FS5 or FS7, but there is still plenty of range to help deal with challenging lighting situations.

As well as bringing a nice improvement in image quality over the X70 (which is pretty good already) the new sensor brings a vastly improved autofocus system. There are 273 focus detection points which are combined with faster readout, faster on sensor processing and the same AF processing technology as used in the flagship Sony A9 stills camera. This brings a really remarkable autofocus system to this camera. The AF system is a newly developed hybrid system that combines phase detection AF with new algorithms created specifically for video rather than stills photography. At last this is an autofocus system that really works for a video camera. It is intelligent and responsive. There is no hunting for focus, it just seems to get on with the job.

AJC03989-1024x683 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
Adjusting the AF response on the PXW-Z90.

Just about every aspect of the autofocus system can be customised in the camera menu. You can choose between using focus zones, the full image width or selectable focus spot areas. The cameras LCD screen is a touch screen so you tap the screen where you want to focus.

You can also tailor the AF’s response speed, you can adjust the size of the tracking range, using a wide range for occasions when you want the AF to follow an object through the shot, or use a narrow range to restrict the focus depth range.

AJC03986-1024x683 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The PXW-Z90’s variable AF drive speed.

You can customise how quickly the AF will move from one object to another, from staying locked on to a faster more responsive setting.

In addition it has that wonderful Sony face detection system that allows you to choose one face out of a crowd of people using the thumb stick on the hand grip or the touch screen. Once selected the camera will stay locked to that face.

36B8087-1024x576 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
Working with the PXW-X90 in Norway.

While I was up in Norway it was between -24c and -30c. In those temperatures you really don’t want to take your mittens off for more than a minute or so. Being able to rely on the cameras autofocus allowed me to keep my fingers warm. Not one shot out of all my rushes from the trip has incorrect focus. That is truly remarkable and made shooting with this camera a real pleasure. I’m not saying that you should always use autofocus. When possible I love to be able to pick and choose how I focus. But in many situations or for less experienced shooters this autofocus system will be a game changer.

For my test shoot in Norway I mostly used Picture Profile number 10 which gives an instant HDR workflow thanks to the use of Hybrid Log Gamma. Using HLG you can shoot as you would do with any other conventional camera. Then take the footage and play it back in HDR on an HDR TV without any grading or other post production work. I also shot at a couple of locations using S-Log2 to test how that worked (I was shooting in UHD and the camera is 8 bit in UHD. For 8 bit I prefer S-Log2 over S-Log3). The Z90 has 10 picture profiles that allow you to tailor how the image looks, including a crunchy DSLR type look. Some filmic looks using Sony’s cinegammas as well as profiles for shooting S-Log2, S-Log3 and Hybrid Log Gamma (HLG).

Z90-dog-sled-frame-grab-1024x576 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
Dog sledding in the arctic (frame grab). Shot in HDR using HLG on the PXW-Z90.

The Z90 has Sony’s XAVC-L codec. This high quality codec offers 10 bit 4:2:2 broadcast quality recordings in HD and 8 bit 4:2:0 recordings in UHD (3840 x 2160). The camera records to SDXC cards, so media costs are very low. There are two card slots and you can record to each slot singly, record to one card after the other or dual record on to both cards at the same time for redundancy and an instant back. You can even use each of the cameras two record buttons to control the records on each card independently should you wish.

36B7978-1024x576 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The PXW-X90 is very small, so carrying it around on the snow scooters was easy.

AJC03977-1024x683 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The rear of the hand grip of the PXW-Z90.

The Z90 is a small camcorder and like all small camcorders this doesn’t leave much room for large buttons and switches. The menu system and many of the cameras functions can be controlled via the touch screen LCD or the small joystick/thumb stick on the hand grip. Iris, shutter speed and gain each have a dedicated access button that selects the function.

AJC03975-1024x683 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The Full Auto switch and ND filter control on the PXW-Z90.

Then you use the thumb stick to select the value you want, or you can set each item to Auto. In addition there is a switch to put the camera into full auto on the rear of the camera. Just below the full auto switch is the control switch for the ND filters.

AJC03970-1024x683 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The Sony PXW-Z90 compact 4K camcorder.

The lens is a Zeiss 12x optical zoom with built in optical image stabilisation. It is controlled by a single ring around the barrel of the lens which can be switched between focus control or zoom control. In addition there is the usual zoom rocker on the handgrip as well as a small zoom switch on the top handle. In addition to the optical stabilisation the camera also has Sony’s electronic “super steadyshot” stabilisation that can be used in addition to the optical stabilisation. Another very handy function is “Clear Image Zoom”. This is a form of electronic zoom function that makes use of a database of textures and object types. When using clear image zoom the camera uses this database to apply just the right amount of image processing during the electronic zoom process. In most cases you can’t see any degradation of the image when using clear image zoom. I left it on for all of the Norway shoot as it turns the 12x zoom into a very handy 18x zoom.

X90-wide-1024x576 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The wide end of the PXW-X90’s zoom range.

x90-telephoto-1024x576 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The long end of the PXW-X90’s zoom lens.

 

 

 

 

 

 

 

 

 

 

 

 

 

After doing so much shooting on large sensor cameras with restricted zoom ranges getting back to a small camera with a big zoom range was fun. For future Norway trips I am very tempted to switch to a camera like the Z90.

AJC03972-1024x683 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The right side of the PXW-Z90.

The Z90 body is almost exactly the same as the X70. The cameras top handle has 2x XLR connectors with the audio controls for the two channels on the opposite side of the handle.

AJC03978-1024x683 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The audio controls of the PXW-Z90.

If you want to make the camera more compact the handle can be removed, but when you do this you will no longer have any XLR connectors. Instead you will have an MI shoe on the top of the camera body  that can be used to connect a Sony UWP-D radio mic or a n XLR adapter. There is also a stereo microphone built into the main body of the camera, so even with the hand grip removed there are plenty of audio options.

AJC03985-1024x683 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The PXW-Z90’s flip out LCD screen.

The flip out LCD panel acts as the cameras main viewfinder. Opening and closing the LCD screen turns the camera on and off. It starts up and shuts down very quickly. The resolution of the LCD is similar to most other modern camera LCD’s. It’s adequate for this type of camera, but it isn’t the highest resolution screen in the world. To check focus you have a button on the top of the hand grip to activate the image magnification function and the camera has a coloured peaking system to help pick out what is, and what is not in focus.  I suspect that with this particular camera, many users will take advantage of the cameras excellent auto focus system and there is a lot of feedback to the user of how this is working including coloured boxes that indicate exactly what the camera is focussing on.

AJC03974-e1519143855419-683x1024 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
The rear of the Sony PXW-Z90.

As well as the side LCD panel there is also a small OLED electronic viewfinder on the rear of the camera. This is very useful for use in very bright sunlight, but it is rather small.

The cameras gain, shutter and iris functions each have a dedicated button on the side of the camera. One push of the appropriate button enables that function to be controlled by a small dial wheel just under the front of the lens.

AJC03968-1024x683 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
Iris, gain and shutter speed controls on the side of the PXW-Z90.

Press the shutter button and the wheel controls the shutter. Press the gain button and the wheel controls the gain. Overall this system works well, but I would still prefer a separate gain switch and a shutter speed up/down switch. On the rear of the hand grip there is a small joystick that sits under your thumb. You can use this thumb-stick to set many of the cameras settings and to navigate through the cameras menu system.  In addition you can use the LCD touchscreen to navigate through the menu as well as select your autofocus points etc.

The PXW-Z90 is a small camera that packs a very big punch. It’s never going to give the fine degree of image control that you get with most large sensor cameras and it won’t quite deliver the same image quality either (although it’s really, really close). If you need a small, discrete camera, perhaps you travel a lot, or you just need a “B” camera, then the Z90 offers a  possible solution.  I haven’t even touched on all the streaming, ftp and wifi capabilities of this camera. The auto focus system is a delight to use and it’s the best AF system I’ve ever come across on a video camera. The new sensor in the Z90 is clearly a fairly large step forwards from the sensor in the previous similar model the X70, it has more dynamic range, a lot less rolling shutter (not that it’s a big problem on the X70) and the final images look better as a result. I might just have to add one to my camera collection.

 

If you would like to join me on one of my adventures to arctic Norway please see take a look at this page. I’ve been running these trips for 11 years and EVERY tour has seen the Northern Lights. This year was no exception and we got to see some really great Auroras and had a great time dog sledding, ice fishing and exploring the Finnmarksvidda.

A7-first-night1-1024x684 The Sony PXW-Z90 - a compact 4K camcorder with auto focus at it's best!
2018 was yet another great year for my Aurora tours. This picture taken on January 20th.

 


 

Sony Venice at IBC 2017.

AJC05782-1024x683 Sony Venice at IBC 2017.
Sony Venice Digital Cinema Camera.

As well as several Sony Venice cameras on the Sony booth, Sony will be holding a special IBC screening of the Venice demo films projected in HDR using Dolby Vision in the main big screen auditorium of the RAI at 2.30pm on Friday. Ed Wild the DP of the UK film will also be there to answer any questions. If you are interested in Sony Venice this should not be missed.