	The Olympus OM System was further enlarged; its Zuiko lenses gained a reputation as being among the sharpest lenses in the world, and in the 1980's, Olympus added further improvements by replacing the OM-1 and OM-2 cameras with the OM-3, a mechanical manual SLR and the OM-4 automatic, both of which featured multi-spot metering capabilities. These cameras were further improved into the last of the OM SLRs, the titanium-bodied OM-3Ti and OM-4Ti, introducing at the same time, the world's fastest electronic flash synchronization speeds, at 1/2000 second with their new Full-Synchro strobe-based flash technology.