Sharpness at 350mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Tamron SP 150-600mm F/5-6.3 Di VC USD lens was attached to a Canon 5D Mark III 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 350mm

Both center and edge sharpness are excellent stopped-down at f/8 through to f/22. At f/32 sharpness is beginning to drop off due to diffraction.

Aperture	Centre Crop	Edge Crop
f/5.6
f/8
f/11
f/16
f/22
f/32
f/40