Color Grading Problem

Hello,

I wanted to know if you could give me a reason for my images' color to turn out this way? So, these were shot in Gh5s at HD in 8 bit, 100M. In the picture Color_problem_1, I thought the picture turned out this way when I color graded because I hadn't exposed it correctly so in the second picture, Color_problem_2, I exposed it correctly using the zebra bars but when I applied the LUT and graded a little a similar problem emerged- colors separating and a pinkish-greenish tone appearing in the image. Is this because I am shooting at a lower quality than what my camera allows (8 bit, 100M) or is it because I didn't expose it correctly?

In the first picture, Color_problem_1, the problem is specially terrible in the white cloth part, there seems to appear these random pinkish-greenish tone all over it.

I can't explain number 1.
But number 2 is definitely a problem of 8 bit recording, which is insufficient for any serious grading.

Picture one shows typical banding issues with 8 bit video shot with a flat profile. Use 10 bit for flat or log recording. The 10 bit recording mode on the GH5 was a long awaited feature when it was released. My GH4 suffers from this issue and is pretty useless for log recording. Also you will get a better result if you ignore LUTs and use the curve palette to create your own log correction.

Picture one shows typical banding issues with 8 bit video shot with a flat profile. Use 10 bit for flat or log recording. The 10 bit recording mode on the GH5 was a long awaited feature when it was released. My GH4 suffers from this issue and is pretty useless for log recording. Also you will get a better result if you ignore LUTs and use the curve palette to create your own log correction.

I am not doubting the truth of your last remark, but I am getting really nice results using the method of mr Leeming, using his camera settings and luts.

Sorry, I didn't read carefully enough and was looking at the red hand, dooh.

Yes, it's he same issue. If you need to shoot 8 bit for any reason, get as close as possible to the intended look and only do very mild grading. If you use 10 bit, don't use V-log, it's too flat (just like Sony's S-log3 is too flat for anything but a professional cine camera).
Try any scene with extreme contrast and you'll see that V-log is never using the full depth of those 10 bits. Just like Sony's A7S3 is never using the whole range in S-log3. Neither in Slog-2, but at least it records a bit deeper.

If you want to make the most of 10 bit in grading, in particular for HDR, follow the same rule and try to get close to your intended look in the camera. All of these cameras have pretty deep adjustments for picture profiles, aka styles.

If you want complete freedom in post, get a camera that is shooting RAW.

Hello,

I wanted to know if you could give me a reason for my images' color to turn out this way? So, these were shot in Gh5s at HD in 8 bit, 100M. In the picture Color_problem_1, I thought the picture turned out this way when I color graded because I hadn't exposed it correctly so in the second picture, Color_problem_2, I exposed it correctly using the zebra bars but when I applied the LUT and graded a little a similar problem emerged- colors separating and a pinkish-greenish tone appearing in the image. Is this because I am shooting at a lower quality than what my camera allows (8 bit, 100M) or is it because I didn't expose it correctly?

In the first picture, Color_problem_1, the problem is specially terrible in the white cloth part, there seems to appear these random pinkish-greenish tone all over it.

You are incorrect that the maximum camera your camera allows is 8 bit. Your camera allows 10 bit which is a MASSIVE difference, please do yourself a favor and shoot 10 bit if your cardspace allows for it!

Humans tend to consider 10 bit as being 20% more than 8 bit, since we are used to decimal.
But it's actually 4 times as much.

Perhaps the OP uses a free resolve version, which I believe cannot handle 10 bit.

Perhaps the OP uses a free resolve version, which I believe cannot handle 10 bit.

Yes, you're right. I would have to update Resolve to use the 10 bit files or transcode my files. But in any case, I will need to get a faster cards first. I will try to get my hands on them.

Sorry, I didn't read carefully enough and was looking at the red hand, dooh.

Yes, it's he same issue. If you need to shoot 8 bit for any reason, get as close as possible to the intended look and only do very mild grading. If you use 10 bit, don't use V-log, it's too flat (just like Sony's S-log3 is too flat for anything but a professional cine camera).
If you want to make the most of 10 bit in grading, in particular for HDR, follow the same rule and try to get close to your intended look in the camera. All of these cameras have pretty deep adjustments for picture profiles, aka styles.

This answer really got me thinking. I always thought Vlog along with 10 bit allowed for maximum flexibility in post, isn't that correct? If not Vlog then what setting would you recommend, CineLike D with adjusted settings?

Try a very contrasty scene and look at the scopes. V-log is far from using the whole range of values.
D-Cinelike can be better for many situations.

Try a very contrasty scene and look at the scopes. V-log is far from using the whole range of values.
D-Cinelike can be better for many situations.

hmm thanks for your response. I will keep that in mind.