Sharpness at 24mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Tamron 10-24mm f/3.5-4.5 Di II VC HLD lens was attached to a Canon 80D body, which in turn was mounted on a sturdy tripod. Self-timer mode was activated. Slight tonal changes are due to slight changes in natural light during the session.

The full frame at 24mm

Both center and edge sharpness are outstanding between f/4.5 and f/11. At f/16 and f/22 sharpness is beginning to drop off a little due to diffraction.

Aperture	Centre Crop	Edge Crop
f/4.5
f/5.6
f/8
f/11
f/16
f/22
f/29