Sunset in Kruger

by MrFrench

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IntroBased on your questions, I get the impression that you miss one important point, and that is the difference between: light perception in the real world, light perception in the world as humans perceive it, light percetion as your camera's sensor records it, light perception as image formats and your computer perceives (or processes) it. The real ...


One stop is a factor 2 of light (-1 stop => half the light, +1 stop => twice the light). So a byte (8 bits) has a dynamic range of 8 stops. It's less than a good camera, which can have up to 13 or 14 stops of dynamic range. So how do we deal with this problem? It is impossible to put 13 bits of a raw file into the 8 bits of a jpeg file without losing some ...


I assume the gray card is 18%. Then compared to a maximum reflectance of 100%, the linear stops are each half, or in steps of 100%, 50%, 25%, 12.5%, 6.25%, etc. So 18% would be around 2.5 stops down. But it will NOT look like that in your histogram, because all RGB data in camera histograms is gamma encoded, which is a different story. In a gamma ...


If you have Photoshop you can get results like this with "Selective Color" tool. open up your image go to layers window (F7) click add adjustment layer in bottom menu of layers window select Selective Color and go to the Properties Tab (should be open by default) choose Blacks in Colors drop down menu move Yellows down to -10 (or below) and Black up to ...


This look is a result of reducing the contrast of the blue channel, making the shadows bluer and the highlights less blue. You can do this with any curves or levels adjustment tool that lets you work on a single channel. Start by raising the low end until you get the amount of blue in the shadows that you want. Depending on how warm the lighting in the ...


My guess is that this shading is a result of adjusting the color temperature when processing RAW files. If you don't have RAW files to work with, but you have Photoshop or similar, you could create a layer and fill it with a shade of blue and then use the multiply blend mode while adjusting opacity for a similar effect.

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