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Type: Posts; User: John Schick

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    +1 23" Monitor Kit (AB Mount)

    +1

    23" Monitor Kit (AB Mount)
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    The LUT does expect white balanced footage, so...

    The LUT does expect white balanced footage, so some of the tint would need to be manually corrected. With that said, the Alexa LUT does pull some green out of the image - especially skin tones.
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    Yes, the R3D metadata says itís the Epic-W Helium 8K S35 sensor with Standard OLPF. You can find the R3D here:...
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    I can provide some examples as well (if there are...

    I can provide some examples as well (if there are specific shots you'd like to see, let me know). Here's a quick comparison using the R3D posted earlier in the thread.

    Everything is left at their...
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    Hey, one of the forum members created a nuke...

    Hey, one of the forum members created a nuke gizmo for converting between linear light and Log3G10:
    http://www.reduser.net/forum/showthread.php?152798-Log2Lin-(RLF-amp-3G10)-for-RED-Nuke-Gizmo
    ...
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    Hey Paul, thatís an interesting way to view the LUTs.

    Just to clarify my position, I'm using ARRIís colorspace documentation found here:...
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    As others have mentioned, the highlight "rolloff"...

    As others have mentioned, the highlight "rolloff" is entirely based on the curves applied to the footage. Both the RED and Alexa initially capture linear data from the scene. Highlight rolloff occurs...
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    When viewing the images in scene referred linear...

    When viewing the images in scene referred linear light, the Alexa appears to be roughly a stop brighter at equivalent ISO settings (the actual exposure difference may vary between sensors & OLPFs).
    ...
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    Yes, that's primarily the case, though I did use...

    Yes, that's primarily the case, though I did use some actual camera data to dial in the results of the color transform (with samples from both the Low Light OLPF & Skintone/Highlight OLPF). These...
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    The skintones look great - itís quite similar to what I ended up with as well.

    Iím not sure if itís too late for one more suggestion, but looking at her hair color - what are your thoughts on...
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    Hey, these are some interesting developments so...

    Hey, these are some interesting developments so far. From looking at this example, the tattoo seems a little too green compared to the pink skin (in my opinion). Possibly the yellow/green adjustments...
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    Yes, that's a good point about the lenses....

    Yes, that's a good point about the lenses. Ideally both cameras will use the same lens for the profile (which should cancel out a lot of the lens characteristics). I ultimately did end up averaging...
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    You're right Phil, that image was from the Low...

    You're right Phil, that image was from the Low Light OLPF / Epic Dragon (great eye btw).

    And the difference isn't always exactly 1 stop (that's just a nice round number to use). Each sensor / OLPF...
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    It may be harder to tell without looking at the...

    It may be harder to tell without looking at the linear light values but from the tests I've done, after converting REDlogFilm (Cineon) and an Alexa LogC footage to linear light, the Alexa is roughly...
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    I like the results of your color pallet Hrvoje,...

    I like the results of your color pallet Hrvoje, it's a pleasing look.

    If you haven't already, I would recommend stress-testing the LUTs on some saturated ramps & gradients, such as this free image...
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    Thanks for all the feedback, and that was my...

    Thanks for all the feedback, and that was my intent exactly - to create an alternative starting point for grading.



    I would classify these LUTs more as technical transforms than mere ďlook...
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    Hey, because REDWideGamutRGB is a standardized...

    Hey, because REDWideGamutRGB is a standardized colorspace option, the transform works for all camera models. Of course, there are slight differences between the various sensors, but those differences...
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    Just wanted to give you an update - I ended up...

    Just wanted to give you an update - I ended up getting an online web demo put together for the RED to Alexa LUTs:
    http://truecolor.us/products/red-to-alexa-lut-demo/

    The quality of the browser...
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    Hey Craig, not sure if this answers your...

    Hey Craig, not sure if this answers your question, but with the exposure increase and the LogC output format, the LUT gives you slightly more highlight rolloff compared to the default settings -...
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    Hey, the LUT also has a +1 stop correction to...

    Hey, the LUT also has a +1 stop correction to more closely match the Alexa at equivalent ISO settings, so you might not need to increase the ISO. I don't currently have a watermark solution, but I...
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    Hey, basically the LUT is using REDWideGamutRGB...

    Hey, basically the LUT is using REDWideGamutRGB as a starting point, which is a common colorspace across all camera models. Obviously, each sensor will have subtle differences, but nothing a little...
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    Hey Anton, great effort so far in making this...

    Hey Anton, great effort so far in making this LUT. You had mentioned you were interested in learning more about LUT build quality. Iíve made a free LUT Stress Test Image that helps you see the most...
  23. I would agree that LUTs are not always necessary...

    I would agree that LUTs are not always necessary and some do indeed introduce terrible artifacts (there are a lot of bad quality LUTs out there). Though, I'd also like to point out that not all LUTs...
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    @Adrian - Thatís an interesting comparison with the light. What colorspace setting did you use for the RED footage? It would be cool to see a frame with the new REDWideGamutRGB option, since that...
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    Not sure if you've seen the saturation rolloff...

    Not sure if you've seen the saturation rolloff LUT I was working on, but it was built to maintain a high level of image quality (there's a size 32 & 64 .cube available):...
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