Exercises of Chapter 4 in Textbook: No.6 - (a) Suppose images are not gamma corrected by a camcorder. Generally, how would they appear on a screen? Answer: Too dark at the low-intensity end. (b) What happens if we artificially increase the output gamma for stored image pixels? (We can do this in Photoshop.) What is the effect on the image? Answer: Increase the number of bright pixels - we increase the number of pixels that map to the upper half of the output range. This creates a lighter image. - and incidentally, we also decrease highlight contrast and increase contrast in the shadows.