Royal Blue color re-production
- Thread starter boghav
- Start date
I've had a few Panasonic cameras render purples and lavenders as blue, even under lighting conditions with known good color temperatures.
Bruce Watson
Veteran
Double whammy. First, dark saturated colors are always a challenge to the gamut. Always difficult for a camera to get it right, and then for the CODEC to get it right.
Second, you're lighting a blue drape with a tungsten source. The tungsten source has little in the way of blue wavelengths, while the blue drape is absorbing the red end of the spectrum as much as it can and only reflecting the blue end. Not a happy combination. The result is likely some level of starvation of the blue channel of your sensor system. And this again makes it difficult to get a dark saturated blue to look right.
Without changing anything else, you can probably get the color to look better by using some CTB gel on those lights. This would give the drapes something blue light to reflect, and the blue channel of the camera's sensors something to see.
+1
Looking at the flesh tones, the camera looks to be properly balanced and likely in 3200 preset. Assuming that he has the wherewithal to add 1/2 CTB or another corrective color to only the drape, he may get a better result. The tough answer is that, under such improvised shooting situations (like my experience doing location-heavy car show content), the shooter has a limited toolbox and, often, no time to properly light the scenario.
Looking at the flesh tones, the camera looks to be properly balanced and likely in 3200 preset. Assuming that he has the wherewithal to add 1/2 CTB or another corrective color to only the drape, he may get a better result. The tough answer is that, under such improvised shooting situations (like my experience doing location-heavy car show content), the shooter has a limited toolbox and, often, no time to properly light the scenario.
Lenilenapi
Carbonite Member
Its hard to tell without seeing the original materials but Its very possible you're getting some IR or more precisely "far red" contamination. The F3 still has some of this though not as badly as the EX-1 /3 by a long shot.
This will happen on dark materials usually blacks but I've seen it on dark blue as well. It adds some maroon or magenta. I think I see it in the suit as well and perhaps her pants. Get a Tiffen T1 filter and balance through that. EX-1r was supposed to correct this but perhaps like the F3 they didn't go all the way as the T1 does make color balancing a little dicier.
Everyone with those cameras should have a T1 on hand.
This will happen on dark materials usually blacks but I've seen it on dark blue as well. It adds some maroon or magenta. I think I see it in the suit as well and perhaps her pants. Get a Tiffen T1 filter and balance through that. EX-1r was supposed to correct this but perhaps like the F3 they didn't go all the way as the T1 does make color balancing a little dicier.
Everyone with those cameras should have a T1 on hand.
Thought all video cameras had an IR filter in the optical path as a matter of course. Are you saying/thinking that the issue is still present in the F-3 even though it's been a known issue in other XDCAM EX cameras? And why do you say that color balancing is more difficult with this "T1" filter applied?
Lenilenapi
Carbonite Member
Yes some far Red/IR contamination is still there. Read Art Adams' article on the Pro Video Coalition and you'll see that it is a problem to some extent on most modern cameras. It hasn't bothered me on the F3 so far though. Balancing through the T1 works, but some people feel that the colors are just not a snappy or rich when shooting though it even if you color balance through it first. I don't have an opinion about that. Goosing the PP a bit would easily compensate I think but you should play with it yourself.
