◆ Thank you for viewing! ◆ This is the Ec-R focusing screen, standard equipment for the Canon EOS-1nRS. I've replaced the screens in all my EOS-1n cameras using this trick. It makes the viewfinder about half a stop brighter, which is useful when using dark lenses or teleconverters. Most screens for the EOS-1 and 1D series are now discontinued. Are you someone whose screen has mold, smudges, or scratches? I will wrap it in air-cushion packaging and ship it via Rakuraku Mercari delivery. #canon #Canon #EOS1 #EOS1N #EOS1NRS #EOS1V