Includes original front and rear
caps.
Correction of Aberrations at
Close Distance Focusing
In general, lenses are designed for
maximum performance at infinity. Accordingly, when the lens barrel is fully extended to
the shortest focusing distance, resolution is reduced. Although this is negligible for
ordinary lenses, it becomes increasingly important in lenses specially designed for close
distance photography. The ZUIKO mechanism moves certain lens components as a unit
automatically correcting for aberrations. This assures high lens performance throughout
the focusing range
