Olympus M.ZUIKO Digital 40-150mm f/2.8 Pro Review

January 28, 2015 | Zoltan Arva-Toth |

Sharpness at 150mm

For these tests, the Olympus M.ZUIKO Digital 40-150mm f/2.8 ED Pro lens was attached to an Olympus E-M5 body, which in turn was mounted on a sturdy tripod. The self-timer was activated. The 100% crops represent about 1/400th of the total frame area.

The full frameThe full frame at 150mm

At the 150mm end of the zoom range, we find that wide-open sharpness is good, but there is a marked improvement upon stopping down to f/4, which is the sweet spot. Quality loss resulting from diffraction becomes obvious from f11 onward.

Aperture Centre Crop Edge Crop
f/2.8 f2.8.jpg f2.8.jpg
f/4 f4.jpg f4.jpg
f/5.6 f5.6.jpg f5.6.jpg
f/8 f8.jpg f8.jpg
f/11 f11.jpg f11.jpg
f/16 f16.jpg f16.jpg
f/22 f22.jpg f22.jpg