Sharpness at 75mm

For this review, the sharpness test is carried out by photographing a real-world sample, rather than a test chart. The Leica Noctilux-M 75mm f/1.25 ASPH pancake lens was mounted on a Leica M (Typ 240), which was in-turn mounted on a sturdy tripod. Exposure delay was activated to prevent camera-shake. Any changes in tone you might see across the crops are due to natural light changes during the shooting session.

The full frame at 75mm

At the centre of the frame, the image is sharpest between f/1.4 and f/8, being a little softer at f/11 and f/16 - it’s most noticeable when examining at 100%, not being overly obvious when viewing at normal printing or web sizes. At the edge of the frame, sharpness is best between f/11, being a little softer at the extreme ends of the aperture range.

Aperture	Centre Crop	Edge Crop
f1.25
f1.4
f2
f2.8
f/4
f/5.6
f/8
f/11
f/16