Sharpness at 280mm

For these sharpness tests the Fujifilm XF 200mm F2 R LM OIS WR lens was attached to a Fujifilm X-T3 body, which in turn was mounted on a sturdy tripod and triggered with a remote release cable. Slight tonal changes are due to slight changes in natural light during the session.

The full frame at 280mm

A 1.4x teleconverter is included with the XF 200mm lens, which when fitted produces a focal length of 280mm, with the maximum aperture changing from f/2 to f/2.8.

At f/2.8 both the centre and the edges are remarkably sharp wide open, with peak performance achieved in the f/4-f/11 range. Diffraction sets in at f/16 and gets worse at f/22, with f/32 pretty much unusable.

Aperture	Centre Crop	Edge Crop
f/2.8
f/4
f/5.6
f/8
f/11
f/16
f/22
f/32