Sharpness at 70mm

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 70mm

At the widest point of this lens, 70mm, sharpness is excellent at the centre of the image when shooting wide open at f/4. Sharpness remains excellent at f/5.6 and f/8, before dropping to very good at f/11. Sharpness drops again at f/16 and is softest at f/16 - but it’s only particularly noticeable when viewing an image at 100%. At the edge of the frame, 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