7/27/2023 0 Comments Panasonic varicam rec709 lutSo you wouldn't be using luts to do anything really. Now that we've figured out all of this, I still don't understand the original question because the HPX2700 doesn't really record a log file. Yea it will do 30, 25 and 24p as well, but of course the imager is stuck at 1280x720, so since it has a fixed bit rate recording system, might as well stick with the 100mbps 720p signal. This may require some adjustment of the saturation to correctly fit your image into P3 color space, should you choose to go this route. Lastly, because you are recording a low contrast image in REC709 color space, you may be able to grade in P3 color space and preserve detail in colors beyond the standard REC709 colorspace. When using FilmRec at maximum dynamic level effect, you should get around 12 or 13 stops of dynamic range in your Varicam recorded images. Therefore it is essential to use 10 bit recording to minimize banding when using FilmRec mode. The color space is still REC709, just the contrast / gamma curve is different.īecause the gamma compression here is a straight line, and not a LOG curve, this method is more prone to banding in gradients than a log recording. To preserve highlights, you would need to create a curve that is mostly straight in the mid tones and round it off to protect the highlights. Simply increase the contrast by increasing the gain. So, to correct this, do not use a LOG/709 LUT. Unlike a LOG gamma, which is a curve, this knee adjustment is a straight line reduction in contrast. Above 10% video level, depending on your "dynamic level" setting, the contrast is lowered with 200% dynamic level being a mild lowering of the contrast, while 500% or on your camera, maybe 600% being the maximum lowering of the contrast. The result is that the gamma curve from zero to 10% is the same as "standard" REC709 gamma 2.2. Are the ARRI Preview LUTs still available?įilmRec on the old Varicam is a "knee" adjustment with the knee point set to 10%. I know Panasonic had LUTs back in the day for the film rec gammas but i doubt those are anywhere to be found in 2019. So in terms of LUTs to bring film rec into an area to grade correctly, which do you prefer? I've noticed placing the "Smooth Step" node in Apple Color does help tremendously. not the tape varicams or the current 35 models. I guess i should clarify that I'm shooting on the AJ-HPX2700 Varicam. I didnt realize DVCPRO HD and AVC-Intra were MPEG files? That doesnt sound right. There is a software version that can do Pro Res, but I think it's only HQ. I think one of the reasons so many people discount it, is because the codec is very limited. If you're shooting 4k, you really need 400+Mbps as a source and I'm not sure if the Varicam can do that. I have given up using pre-programmed luts because I've found most of them to not give me the look I'm going for in-camera.ĪVC-Intra 100 is OK for 1080p, but not for anything else. So you would use a LUT to bring it into the color space you're using to grade, whether that's Rec 709, Rec 2020 or DCI-P3, the color space is chosen in the grading program as a "base" and you will grade to that space. Basically all it does is flatten the image out so the mpeg file has greater dynamic range than it would normally.
0 Comments
Leave a Reply. |