All the reviews of the product that I have read have been positive. The only installation problems I located in my research was with Canon cameras. I figure if I can put in Zimmer knee replacements, I can put in a focusing screen. The most difficult aspect will likely be finding a dust free environment for the installation process. I may perform the camera surgery at the hospital to be certain no dust gets inside. A full review will be done once the manual focus screen is in my digital camera.