Sharpness at 85mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Samyang Premium MF 85mm f/1.2 lens was attached to a Canon 5DS R 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 85mm

Both center and edge sharpness are excellent between f/4 and f/8, but there's obvious softness evident wide open at f/1.4 to f/2.8 in both the centre and edges of the frame. At f/11, f/16 and most notably f/22 the overall sharpness is beginning to drop off substantially.

Aperture	Centre Crop	Edge Crop
f/1.2
f/1.4
f/2
f/2.8
f/4
f/5.6
f/8
f/11
f/16