The 1975 OM2 may have been the first commercially released camera that implemented OTF but not the inventor. Canon has a 1969 patent for flash OTF and Minolta has a patent on OTF metering very much like that used by OM2 in 1975.
Originally Posted by wblynch
Excerpt from -> May 1976 Modern Photography review of the OM2
The Pentax LX may have patterned their Integrated Direct Metering system of previous patents/implementations, but I really appreciate that they took it a step further. To date, it's unassisted single metering range of - 6.5 EV to EV 20, longest aperture priority autoexposure, realtime scene monitoring for changes in light is unequaled by any camera past or present. I am not aware of an external meter that has this range.
Last edited by Les Sarile; 01-08-2013 at 08:04 PM. Click to view previous post history.
Reason: Corrected year for OM2