![]() The result is visually different note the increased contrast in the scales. Unlike the grayscale mode change above, the channels are not remixed in different percentages, so we should expect different results. Duplicate the original image ( Ctrl+D) and right-click on the copy. Here is what I get if I use desaturate instead. My experiments with the Channel Mixer (more on this below) support this. This formula does a pretty nice job in the general case, but some images do not work as well with it, particularly if the green channel component is not strong. Supposedly this mix accounts for the eye’s sensitivity to different colors. ![]() I don’t know how this conversion works in GIMP, but I have read that Photoshop uses a standard mix of the RGB channels for their grayscale conversion: RED=30%, GREEN=59% and BLUE=11%. Here is what I get if I use the standard mode change to grayscale from RGB.ĭuplicate the original image ( Ctrl+D) and right-click on the copy. I thought it might look nice as a black and white image. Here is an example image, loaded into GIMP.
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