i’ve read a lot about this and here comes my 2 cents…
ok, so the trick here is 8 bit vs 10 bit(i.e. professional).
remember the 8 bit log for the GH4? in the beginning, everyone was like,
wow! it’s totaly worth it to buy the log thingy, until they found it’s 8
bit.
Well guess what, all that pulling and pushing to get back to where you
need to be(with a LUT) doesn’t actual help you at all if you’re 8 bit. and
h.264 isn’t going to help much either, it’s a bitrate limited codec.
i.e. if you do want to shoot flat you need a camera with very low noise
and 10 bits and guess what keying likes? yep, low noise.
->What you are actually looking for is a “Neutral Picture Style”, not a
flat profile. although this technique is confusingly called prolost flat.
i.e. sharpness 0, contrast 0, saturation(2 notches left)
the reason saturation is not 0, if you throw it away in the camera’s
codec, then its almost impossible to get it back in 8bit, 4:2:0.
Cinestyle may give 1-2 more f-stops,but the color noise will go waaaay up.
Another important thing to save your bits from artifacting is to make
doubly sure your white balance is correct, so you’re not fighting the temp
colors in post.