I know the differences between a rangefinder and a SLR/DSLR but what is the real reason to put a mirror in front of a lens to reflect light into the viewfinder? It raises lens prooduction price when ...
I have an Olympus OM-1 which I've been using as a backup camera for my film Canon Rebel. However, when the mirror trap became stuck "up" in the Olympus, I tried gingerly to pull the trap back down. It ...