Sharpness Cont... 2

Sharpness at 100mm

For these tests, the Olympus M.ZUIKO Digital 40-150mm f/4-5.6 ED lens was attached to an Olympus E-P2 body, which in turn was mounted on a sturdy tripod. The self-timer was activated. The 100% crops represent about 1/300th of the total frame area.

The full frame at 100mm

Centre sharpness is good wide open and reaches excellent levels by f/5.6. Border sharpness is pretty uniform from f/4 through f/16, with only f/22 being distinctly soft.

Aperture	Centre Crop	Edge Crop
f/3.2
f/4
f/5.6
f/8
f/11
f/16
f/22