Thread: Epic-W Gemini Low-Light Test Footage + R3D

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  1. #31  
    Senior Member Roger Viloria's Avatar
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    Martin, thank you for this! Could you share some r3d and arriraw mxf frames ;)
    Please!
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  2. #32  
    Senior Member Tehben Dean's Avatar
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    Thanks for the tests Martin. Following.
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  3. #33  
    Senior Member AndreasOberg's Avatar
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    Was the Gemini in low light mode btw? I guess you would not want to shot in low light mode in ISO 800 probably but at the higher ISOs
    Great job!
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  4. #34  
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    Quote Originally Posted by AndreasOberg View Post
    Was the Gemini in low light mode btw? I guess you would not want to shot in low light mode in ISO 800 probably but at the higher ISOs
    Great job!
    800 ISO in standard mode, 1600-12800 in LL mode.
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  5. #35  
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    Any word on how many stops gemini specifies over middle grey at iso 800? Is it the same number of stops for iso 3200 in LL mode?

    This test doesn't seem to reveal anything about highlights or overall dynamic range...
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  6. #36  
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    What the test showed me is that I prefer the un-corrected skin tones from the Gemini over Helium and the Dragon.
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  7. #37  
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    Thanks for posting the R3D!
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  8. #38  
    Senior Member AndreasOberg's Avatar
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    I did a crop of the jpegs at 6400 and 12800 ISO. I'm focusing mainly on high iso situation since for us this would open up a lot of situations.


    Hope you are ok with me uploading it Martin since it is of course your test :)

    I recommend downloading all of the jpegs from Martin and go back and forward on a UHD TV. Our OLED TV show the differences in noise much clearer than our computer monitors.

    From what I can see in this test, these are my conclusions:
    - I would not use Helium higher than 3200 in this situation which is still impressive.
    - Gemini seems usable all the way up to 12800 if you can do strong noise reduction, for example if the topic does not have a lot of detail.

    If I compare Helium downsampled to UHD noise with Gemini I would say that Helium 3200 is a little bit cleaner than Gemini at 12800. That is indicating to me that downsampled to UHD Gemini is about 1 2/3 stop better than Helium. Possibly you could do more clever noise reduction on Helium since the resolution is higher.
    If you would watch Helium at 100% and Gemini at 100% I would expect Gemini to be even better, maybe even more than 2 stop better.

    Considering how good Helium already is when it is dark, Gemini is a big step forward in this regard.
    Best wishes,
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    Last edited by AndreasOberg; 04-05-2018 at 02:45 AM.
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  9. #39  
    Senior Member Thai Christen's Avatar
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    Now that we know how good Gemini is for low light, can anyone test how well it handles highlight in standard mode please? Has DR improved over Helium above middle grey? Helium weakness is above 94IRE.

    Not everyone shoots run gun one man band in the dark.
    Last edited by Thai Christen; 04-05-2018 at 05:39 AM. Reason: Add info
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  10. #40  
    Quote Originally Posted by AndreasOberg View Post
    I did a crop of the jpegs at 6400 and 12800 ISO. I'm focusing mainly on high iso situation since for us this would open up a lot of situations.


    Hope you are ok with me uploading it Martin since it is of course your test :)

    I recommend downloading all of the jpegs from Martin and go back and forward on a UHD TV. Our OLED TV show the differences in noise much clearer than our computer monitors.

    From what I can see in this test, these are my conclusions:
    - I would not use Helium higher than 3200 in this situation which is still impressive.
    - Gemini seems usable all the way up to 12800 if you can do strong noise reduction, for example if the topic does not have a lot of detail.

    If I compare Helium downsampled to UHD noise with Gemini I would say that Helium 3200 is a little bit cleaner than Gemini at 12800. That is indicating to me that downsampled to UHD Gemini is about 1 2/3 stop better than Helium. Possibly you could do more clever noise reduction on Helium since the resolution is higher.
    If you would watch Helium at 100% and Gemini at 100% I would expect Gemini to be even better, maybe even more than 2 stop better.

    Considering how good Helium already is when it is dark, Gemini is a big step forward in this regard.
    Best wishes,
    Andreas
    A HUGE thing as well, that if the fill lighting is exactly the same, the Gemini isn't just 'cleaner' with noise structure, but it's also getting INFORMATION that's not there on helium and Dragon. Look at Dragon and Helium, and it's just black, with noise on top, where Gemini has clear shape and skin-tone coming out of that. Even at 6400, the mustache is a clear example of more detail, even though it's less resolution.

    Seriously impressive.
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