06-10-2013 11:07 AM - edited 06-10-2013 11:08 AM
I applied these LUT's in Davinci without any further processing or correction to the image to give an idea of the different looks attibuted to them. Generally its a good idea to put a node before the LUT so you can adjust gamma or gain prior to applying the LUT.
A couple notes: The bluish tone is not the result of the LUT. I purposely set the camera for 3200k while using 5600k light to achieve a cooler look as the final grade will be set for a moonlight look. My exposure is quite low. ie. in slog2 my skin was in low 30% range and nothing "white" over 60% IRE. Thankfully I had a decent LCD monitor attached because at these low levels the OLED VF is absolutely useless.
(click on any image to open full 2k version)
starcentral LOW CON 01 LUT (available for free download)
starcentral GOLDEN TEXAS LUT (available for free download)
yesterday - last edited yesterday
Yes Sony makes these available, the slog3 version is here: http://community.sony.com/t5/F5-F55/Release-versio
The slog2 version is here: http://community.sony.com/t5/F5-F55/NEW-3D-LUT-s-f
And lastly a PDF describing these 4 Sony look/luts can be viewed here: http://community.sony.com/sony/attachments/sony/la
Dennis, if you used the (SLog2-SGamut to LC709A) as an output lut in Resolve, would you get the same final picture as if you had used SLog3-SGamut3.Cine to LC709A? In other words, both output luts in theory should be transposing their respective gamma/gamut tables into 709 color space, adjusted for low contrast and Alexa hues, so that they look the same even though they started out being recorded very differently.
As a companion question, if you selected the SGamut3.Cine_Like matrix from the custom mode in order to gain access to the noise reduction, would you get the same picture from the matrix gamma as the EI gamma if the (SLog3-SGamut3.Cine to LC709A) was output lutted in post?
I have never tried it so it would need to be tested. DP Art Adams recently did some video tests comparing gamut vs gamut3 and there were differnences in color in the output. I have to imagine that alone might contribute some different, and not sure if the LC709A LUT has the color transform necessary to bring images from each gamut to the same place.
As always I would suggest you setup a simple test with some flowers, a model (skin tone) and macbeth color chart and try both. It would be interested to try, perhaps someone else already has and can post some comments or results.
Here is Art's article:
As for second question, it is tricky. In custom mode you would have to disable matrix, detail settings, etc.. to get the similar processing as in the CineEI mode where much is disabled... but you would benefit from the Noise Reduction of course, which could be nice to have.
I haven't tried any of these "tests" so really speaking of high speculation.
This is a great comparison of SGamut and SGamut3.cine, and a demonstration of how the underlying characteristics of your chosen color gamut always affects the LUT you impose on it. For example, SGamut makes William’s face seem redder than it really is, and it exaggerates the red in Kelly’s face as well as making her appear yellowish in Cine + 709. SGamut3.cine always renders flesh tones more neutral and less red, even in Cine + 709 where warm tones are deliberately emphasized by the yellow cast.[/quote]
Art's answer is that the underlying characteristics of the chosen color gamut will always affect the lut you impose on it.
The matrix settings inside Custom mode include one called (Sgamut3.Cine-Like). If you shoot SLog3 in Custom mode, and that gamut really is "like" Sgamut3.Cine is for EI mode, then the Sony 3D output lut (Slog3_Sgamut3.Cine to LC709A) should work the same in post for footage shot in EI or Custom mode. And I think it is close. It was hard to be absolutely certain as I was shooting outdoor footage at dusk, so the light was changing, and I was making exposure changes as well.
I was using LC709A look as an Mlut on the F55 for setting exposure. The noise if there was any, was minuscule at most in EI mode. I couldn't see any improvement or even a difference in Custom with NR on low, and EI1250 looked as clean as EI640, my $0.02.