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Does anyone know what the formula is that photoshop uses to convert from RGB mode to Grayscale. I’ve seen the formula: .3xRed + .59xGreen + .11xBlue = luminance But that equation doesn’t add up.
Take for example the color Red converted in Photoshop.
Red=R-255, G-0, B-0 -> converted to B&W in PhotoShop = R-130, G-130, B-130
Now using the above equation:
Red=R-255, G-0, B-0 -> .3×255 + .59×0 + .11×0 = 76.5
Not sure if I am supposed to then apply the 76.5 to every channel inorder to get it’s gray value. If so it would be: R-76.5, G-76.5, B-76.5 which is different than what photoshop gives me: R-130, G-130, B-130
Thanks
Justin
Take for example the color Red converted in Photoshop.
Red=R-255, G-0, B-0 -> converted to B&W in PhotoShop = R-130, G-130, B-130
Now using the above equation:
Red=R-255, G-0, B-0 -> .3×255 + .59×0 + .11×0 = 76.5
Not sure if I am supposed to then apply the 76.5 to every channel inorder to get it’s gray value. If so it would be: R-76.5, G-76.5, B-76.5 which is different than what photoshop gives me: R-130, G-130, B-130
Thanks
Justin
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