Quote Originally Posted by wombat2go View Post
I tried a 4.5 V superbright led flashlight lamp in the Graflex rangefinder on top of the Speed.
It did not work at all.
It was brighter than the original filament lamp but the beams were just fuzzy blobs.
I think the led has a lens/diffuser which upsets the original ability of the rangefinder optics to focus sharply on the filament wires
I wondered about this, perhaps one could put a mask in front of the LED? Or perhaps paint the LED so only a stripe is exposed, then experiment with it's placement relative the optics? The trouble is that an LED is a fuzzy blob compared to a filament.