Sharpness Cont... 2

Sharpness at 23mm

For these sharpness tests the Fujifilm 18-55mm lens was attached to a Fujifilm X-E1 body, which in turn was mounted on a sturdy tripod. Slight tonal changes are due to slight changes in natural light during the session.

The full frame at 23mm

At 23mm the centre is acceptably sharp at f/4, with peak performance achieved in the f/5.6-8 range. Diffraction sets in at around f/16, with its effects becoming more visible at f/22.

The edges are somewhat soft at f/2.8 but sharpen up very nicely at f/5.6, with f/8 the optimum setting.

Aperture	centre Crop	edge Crop
f/2.8
f/4
f/5.6
f/8
f/11
f/16
f/22