photorick : Photo Keywords : 11dc3282 : This shows the general target setup. On the left is a white sheet of paper with black bars printed on it so the camera has a high contrast target to focus on. Remember you want to know where your camera thinks focus is when it focuses on this target. Use the lowest f/# on your lens so you can see where your camera is focusing. The point light source should be in the same plane as this focus target and surrounded with a black background (like a black card). The resolution targets are not necessary but are useful to evaluate the results for your own piece of mind.