Thread: Blackmagic motion mount

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  1. #1 Blackmagic motion mount 
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    Hello guys,

    Red had the motion mount, which reduces rolling shutter.
    https://vimeo.com/154186959

    What about blackmagic, is this something blackmagic would consider offering/building or a third party. As I would certainly be interested in this for my ursa mini pro.

    Cheers,
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  2. #2  
    Senior Member shijan's Avatar
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    Not so long time ago this technology was invented and manufactured by one smart person and sold as a separate filter http://tessive.com/the-time-filter/ It was possible to connect TIME FILTER to any camera with Genlock. Later RED redeemed patent for this technology from that guy and design proprietary Motion Mount.
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  3. #3  
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    Motion mount has it's own issues. Lose 1.5 stops instantly using it. Color shifts (have to be compensated for automatically or manually). Can't use fast aperture settings with strong ND settings or you get distortion/bokeh issues. Can't shoot over 110fps (no 200fps etc). Flares completely change (rainbow effect). It's really not that popular because of all the issues.

    Here's just one sample of someone reporting issues from reduser.

    REGULAR MOUNT: ISO 2000, ND 2.1





    MOTION MOUNT: ISO 2000, ND 2.1






    REGULAR VS MOTION MOUNT at ISO 2000, ND 2.1



    Two things that stand out during the test:
    - pointing straight at the sun caused some very strong blue/cyan tint (that I corrected for in those screen grabs)
    - the Motion Mount rainbow effect is extreme and red noise seems a lot more dominant with the MM.
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  4. #4  
    Senior Member Frank Glencairn's Avatar
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    I'm 99% sure I saw a software/post plugin from Tessive quite a while ago, that does basically the same. but can't find it anymore.

    Maybe is was just announced and never happened.
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  5. #5  
    Senior Member shijan's Avatar
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    It seems their plugin http://tessive.com/time-shaper-info/ was also sold to another company http://reald.com/#/truemotion
    It is also not perfect. I tested trial demo with 60fps source from BMMCC and come to conclusion that it needs at least 120 fps source. Even with 120 fps source it may produce unexpected motion artifacts at the moving object edges.
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  6. #6  
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    Of course Red bought the rights to keep them for their cameras. Yes, there are side effects, but with enough light the results can be very nice. ( we have one). It's not only reducing RS, but makes the beginning and end of the motion blur much softer, more like an analog camera with rotating shutter.
    The software solution is not convincing, simulating the effect after shooting is near impossible.
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  7. #7  
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    Quote Originally Posted by shijan View Post
    It seems their plugin http://tessive.com/time-shaper-info/ was also sold to another company http://reald.com/#/truemotion
    It is also not perfect. I tested trial demo with 60fps source from BMMCC and come to conclusion that it needs at least 120 fps source. Even with 120 fps source it may produce unexpected motion artifacts at the moving object edges.
    Nice plugin, but if it takes more then 24fps to work. Then it is useless to me.
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