Okay I picked up an old F3 recently, it's the first Nikon I've owned where I can replace the focusing screen. Got it from an older chap who'd taken it round the world and up the Himalayas in the 80s. It came with what looks like a grid screen installed. I thought it was really dim in the viewfinder so following some snooping online I thought it might be an older screen without the red dot. Popped the screen out to check and saw no Nikon markings, just a few white marks and a made in USA stamped on the frame. This has me totally baffled. Anyone seen 3rd party focusing screens before for the F3 before?
Hopefully I can find a Nikon replacement screen at some point soon, and get this old girl firing again
Hopefully I can find a Nikon replacement screen at some point soon, and get this old girl firing again