SD Q Colour

Started 3 months ago | Discussions thread
richard stone Veteran Member • Posts: 3,410
Re: I always find it interesting..

D Cox wrote:

absquatulate wrote:

That the people who complain the most about alleged problems with cameras never produce their own shots as evidence, with a request to help sort out the issue. How can you possibly know the photographers intent of the shots you posted? How do you know they didn't process those shots to look exactly as they did? In fact I'll wager that's exactly what they did considering some of them are commercial shots.

And in commercial shots of models, we are not dealing with skin colours, but with makeup colours. The READ MORE buttons on this page lead to some lists of pigments and dyes that are used -- many are the same as are used in artists' paints.

Many years ago somebody who had use of a spectrometer made me a set of spectrum curves of paint samples that I provided. I've lost the original printouts, but here is a tidied up version of the spectrum for European skin:

Many happy hours with Letraset making the labels for these graphs !

I personally have had no issues with colour with the SD-Q, apart from when I've made a mistake with white balance. There are enough people shooting commercially with a Quattro sensor for me to believe it's not the sensor that's the problem, apart from my own experience obviously.

The only issue I've ever experienced in terms of colour, is yellow can blow out easily, especially on things such as waxy flower petals, but that is not unique to the foveon sensor, plenty of bayer sensors have difficulty with that scenario, and the Quattro sensor's more limited dynamic range is not exactly a secret.

Buttercups are from Hell.

As to the link: Excellent!

The idea, the concept, that images of made up models show "actual" skin color is of course absurd.

I recently posted a picture of the wife, who at the time was in shadow so the light was somewhat reduced and a bit on the blue side, and she had no make-on. But with skin you don't just get the surface reflection. Particularly with Foveon. And Foveon sensors are quite sensitive to the illumination. Now, I think that between the camera and SPP, the white balance and various controls did quite well with the colors, including the skin "color." So what color should her skin be? The color we might get in well balanced studio lighting? A good match for the scene and lighting in question (my preference) or some other kind of look?

Make-up gets you mainly surface and pigment color too. Making pictures of photos of skin, as in the OPs samples, does not get you anything but surface and dyes and such.

Flowers are great too: Flowers are the sex organs of plants, as I understand it, and are meant to be seen by, and attract, in terms of results and evolution, pollinating insects and other such creatures, not people. As such the reflective properties of flowers may not be exactly as they first appear to human eyes. And with good reason.

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