This week’s blog post I wanted to write about a specific part of the camera system that you may or may not be familiar with, the Focus Screen. The Focus Screen is a small piece of flat, translucent material, either ground glass or a fresnel lens. It is located inside the front of your camera where the lens mounts and help you acquire focus and frame your shot through your camera’s viewfinder. This first image is a Canon Eg-A Focus Screen. There are various types of Focus Screens for most cameras and they can be either etched or non-etched. There are even …