Thread: Gemini Noise Issue

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  1. #11  
    That's exactly what annoys me in the first place
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  2. #12  
    What was the compression ratio ?
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  3. #13  
    Senior Member Tommaso Alvisi's Avatar
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    8:1
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  4. #14  
    Well there you go.

    You are not looking at only noise. You are looking at a texture from smoke + diffusion + noise + wavelets dealing with low level signal.

    Fine texture costs MB/s.
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  5. #15  
    It make sens, I’ll try a higher compression next time I go with a smoky/haze effect.

    Thank you Hrvoje
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  6. #16  
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    Here's one at 6:1 with no haze. Also has lots of noise. Thoughts?

    https://drive.google.com/file/d/1Koz...ew?usp=sharing
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  7. #17  
    Quote Originally Posted by Julien Jauffret View Post
    It make sens, I’ll try a higher compression next time I go with a smoky/haze effect.

    Thank you Hrvoje
    You're welcome...

    Lower compression. :)

    I propose 2:1 on Gemini for shots like these.
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  8. #18  
    Quote Originally Posted by Kyle Kelley View Post
    Here's one at 6:1 with no haze. Also has lots of noise. Thoughts?

    https://drive.google.com/file/d/1Koz...ew?usp=sharing

    Light quality + underexposure + compression + WB channel push


    When you are not shooting daylight WB light source and not compensating that with the optical filter temperature correction, don't count on the same noise levels.
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  9. #19  
    Senior Member rand thompson's Avatar
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    Kyle,


    As suggest above, maybe lower compression and more light. I graded it a little, but with noise reduction it looked muddy and without noise reduction, I don't think that you would want to use this file. I think if you maybe provided a very short clip, Both a Temporal and Spatial noise reduction could be applied to maybe get better results, or maybe not. It's hard to judge the usability of a noisy file with only 1 frame.





    Warmer version out of Redcine-X Pro with no noise reduction in resolve.


    Last edited by rand thompson; 02-25-2019 at 06:29 PM.
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  10. #20  
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    Interesting. Thanks, Rand. As a rule I generally stay at 800 ISO or lower, but did this little short film and pushed it a lot. The above still was at 2500, and based on the Gemini's LL 3200 rating, I thought I'd be okay. Happy to provide a short clip if you want to play around.
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