Sharpness at 200mm

Our sharpness tests are carried out by photographing a real-world subject rather than a test chart. The Panasonic Lumix Pro 70-200mm f/4 O.I.S. lens was attached to a Panasonic Lumix S1R, which in turn was mounted on a sturdy tripod. Self-timer mode was activated to steady the camera completely. Any slight tonal changes you may see across the crops are a result of slight changes in natural light during the shooting session.

The full frame at 200mm

At the furthest reach of the lens, 200mm, central sharpness is excellent at f/4, getting slightly sharper at f/5.6 and f/8. Sharpness is also very good at f/11, before softening a little at f/16 and becoming softest at f/22. The overall impression of sharpness across the whole aperture range. At the edge of the image, the sharpest results can be seen between f/8 and f/16.

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