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.

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.