Skin colour in 24MP DX cameras

Started Jun 14, 2013 | Discussions thread
brownie314
Contributing MemberPosts: 928
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Re: Use a CCD based camera for portraits
In reply to RobCMad, Jun 20, 2013

RobCMad wrote:

Stacey_K wrote:

FTH wrote:

RobCMad wrote:

rkumar wrote:

So if you have different shades of white, brown, asian, and black skin tones in the picture, do you get one right and others wrong?

If you don't get colors right at the moment of capture - you have lost a lot of information forever.

But surely that would only happen if you got the exposure wrong - blew a channel or underexposed beyond the useful range of the sensor. If the exposure is correct then skin tones are a matter of rendering, no?

like the Nikon D60, D200, D80 or D40X - they will provide perfect skin tones right out of the box. CMOS based sensors suffer from color shift depending on the light sources and if the light sources are mixed, it becomes a nightmare.

What I am finding (I used to shoot with a CCD kodak sensor olympus) is this D7000 is very sensitive to light reflected onto the subject off nearby objects. I shot this women standing on a green lawn and any of her skin not directly in the overcast daylight falling on her had a green tint to it. It was not pretty! I never noticed this problem with my CCD sensor camera.

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Stacey

I don't doubt your experience (or that of the numerous other people who are nostalgic for CCD sensors) but what is the science behind this? Doesn't a sensor just, in effect, count photons - does a CMOS sensor count green photons reflected from a lawn more than it counts other green photons or more than a CCD sensor counts them?

I am not so sure that the science really matters.  The point is that many people feel that the newer Nikon sensors have problems with skin color under certain conditions.  Whereas some of the older sensors seemed to be better in this regard.  Could be CCD/CMOS issue, could be just that Nikon decided to change their algorithms for image processing.  Don't really know, but I do know that I can see the difference and many other people can too.

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