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    Panasonic GH5s looks to be a bit faster read out than GH5 : http://www.photobyrichard.com/review...x-gh5s-review/
    https://youtu.be/uA6oyCKUK1E


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    Senior Member Samuel H's Avatar
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    That looks really impressive. Without doing any measurements, I'd guess 10ms or so. Eagerly awaiting a controlled test clip.


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    Here's a head to head GH5 vs GH5s for rolling shutter. Definably not controlled, but noticably less.
    https://youtu.be/ql8szWeElXQ
    Last edited by bdemenil; 01-23-2018 at 01:02 PM. Reason: Added link


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    This is my mind makes the GH5s a better camera than the A7s ii - which has poor rolling shutter performance


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    Senior Member Jim Arthurs's Avatar
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    In prep for an upcoming VFX job I did a series of rolling shutter measurements today with my new GH5s... here are the results:

    C4K 29.97 11.3msec
    C4K 23.98 11.3msec

    UHD 59.94 12.0msec
    UHD 29.97 11.8msec
    UHD 23.98 11.9msec

    FHD 29.97 11.5msec

    I use the rolling shutter analysis process in the motion tracking software, Syntheyes, which does a 66 pass iterative measurement method;

    https://www.youtube.com/watch?v=LgWscUOse_c

    I suspect all the UHD times are actually the same, but I haven't had the chance to run multiple video clips to take an average. Of course there are a few things I didn't get a chance to test; only the flavors that I might have to shoot.

    Interestingly C4K is the fastest so far... perhaps because it requires the least amount of processing from the sensor? Anyway, an improvement over the GH5, and impressive for UHD/C4K!

    Regards
    Jim Arthurs


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    Senior Member Samuel H's Avatar
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    Thanks! I added the numbers to the table. They look great!


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    Would this video be enough to measure the RS of the new A7III?

    https://www.youtube.com/watch?v=J6T4Kxo2N5E


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    Senior Member Samuel H's Avatar
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    I've seen it, and yes, I plan to use it to take the measurements. Hopefully it will work. I have to download it first, and my usual app for that is not working currently, YT changed something and now I have to wait for them to update the app.


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    Senior Member Samuel H's Avatar
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    Done. And the results are pretty good: 24.3 ms in 4k FF 25fps, and 8.7ms in 1080p FF 25fps.


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    Thanks Samuel. 24.3ms isn't too bad considering the full 6K downscale.

    I do wish that test had included the "full frame" 30p mode (which is actually 1.2x crop, scanning 5K instead of 6K), as that's my "base" framerate for most things. Hopefully it's a good bit faster than 24/25p.

    8.7ms in 1080p is great, I just hope the resolution is good in those modes. It's pretty awful in the a6300/6500.


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