Digital Light & Color

I’m new to PWP raw conversion (but not to raw conversion in general) so the following is subject to revision. The principle is that the conversion should contain maximum information for the image w/o clipping and w/o having to reverse out a change downstream. To that end I do the following: Color I ...

Kiril: I do normally keep the image space and the working space the same and I was just experimenting with raw conversions. My reason for asking the question is that Adobe RGB is not that much larger than sRGB (except in the greens and to some extent the cyans) and Wide Gamut has been knocked as bei...

I should mention that I am quite aware that converting upwards from one color space to another does not increase the gamut but I am not assuming that the process of rendering a raw into a color space is the same as converting between ICC profiles.

I’m new to the PWP raw converter. In the manual it states under Advanced Settings: Output Color Space: The color space to which the final image is converted …. Three standard color spaces are available. They are sRGB, Adobe RGB, and Wide Gamut. If my output in PWP raw settings is sRGB, and if I then...

Bob: If x is a R, G, or B channel value, then the subtractive filter is computed as: 255 – ((255 – x)**2)/255 That is, the channel value is inverted, squared, normalized, then inverted again. The operation is performed on each channel. Note that 0 and 255 are fixed points and unchanged by the comput...

Regarding the Gray Wedge -- why not make your own?

File/New with the desired dimensions. Apply a gradient

Transformation/Special Effects/Posterize. Set the desired number of steps and hit Auto Palette.

I don't print much but why not ask the Durst Lambda people what grayscale levels at the extremes they should be able to print and distinguish on the paper of their choice. Then make test prints with dark and light blocks on that paper and see what the printer you are using actually delivers? If it i...

Maciej: About a year ago, I suggested a dynamic clipping display tied to the Preview screen and still think it would be highly useful. Color coding can show the channel(s) maxed out in highlights or at zero in the shadows. I would use it all the time setting BP/WPs in curves and in sharpening transf...

I have found and It has often been reported on various forums that recent Nikon DSLRs set to sRGB tend to blow the red channel on the camera histogram when photographing red or yellow flowers or fall foliage using what is otherwise a normal exposure — say a sunny/16 exposure in appropriate lighting ...

For photo use the IPS (S-IPS, H-IPS, …) and *VA (MVA, PVA, S-PVA, …) families of panels offer the best color and much wider viewing angles than the TN panels. I have a NEC S-IPS and a Samsung S-PVA and am quite happy with both – the model numbers are irrelevant because they are no longer in producti...