Sharpness at 50mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Fujifilm TCL-X100S lens was attached to a Fujifilm X100S, which in turn was mounted on a sturdy tripod. The self-timer was activated to avoid camera-shake. Slight tonal changes are due to slight changes in natural light during the session.

The full frame at 50mm

Centre sharpness is poor wide open at f/2-f/2.8, much improved at f/4, and excellent between f/5.6 and f/11. At f/16, sharpness is still commendably high. At the edges of the frame, sharpness is acceptable from f/5.6 onwards.

Aperture	Centre Crop	Edge Crop
f/2
f/2.8
f/4
f/5.6
f/8
f/11
f/16