Leica 35mm f/1.4 Summilux-M ASPH (11663)

The Leica 35mm f/1.4 Summilux-M ASPH (11663) — also known as the Summilux 35 FLE — is a full-frame prime lens for the Leica M mount with a 9-element, 5-group optical design, 11-blade aperture, 0.4m minimum focus distance, and a compact 338g body that includes a built-in retractable lens hood.

Key Specifications

• Focal length: 35mm prime, full-frame coverage
• Maximum aperture: f/1.4 — minimum aperture f/16
• Lens construction: 9 elements in 5 groups
• Aperture blades: 11 — for smooth, rounded bokeh
• Minimum focus distance: 0.4m
• Filter thread: 46mm
• Diameter & weight: 58mm diameter, 338g
• Mount: Leica M — manual focus only, no image stabilisation

Who is the Leica 35mm f/1.4 Summilux-M ASPH for?

This lens is made for photographers who shoot with Leica M cameras and want one lens that can handle almost any situation. The 35mm field of view is wide enough for environmental portraits and street scenes, yet tight enough to isolate a subject with a shallow f/1.4 depth of field. That maximum aperture also makes it a capable choice for low-light work — evening travel shots, candid indoor frames, and even astrophotography where you need to pull in as much light as possible. At 338g with a retractable hood included, it doesn't add bulk to a rangefinder kit. The 0.4m close-focus capability gives you more creative range than many classic M lenses. If you shoot across mirrorless formats and want a lens that transitions between reportage and portraiture without swapping glass, the Summilux-M 35mm f/1.4 ASPH fits that brief cleanly.

Buying a used Leica Summilux-M 35mm f/1.4 ASPH (11663)

Picking up this lens second-hand is one of the more practical ways to get into the Summilux line. The 11663 version (the FLE generation) is a well-documented lens with a strong community of users, so condition reports and reference images are easy to find. Every pre-owned item on Camera-tweedehands.nl is individually inspected and photographed, and comes with a minimum 12 months warranty. If you're comparing the 11663 to earlier Summilux-M 35mm variants, the key practical difference is the closer 0.4m minimum focus distance and the built-in retractable hood — both genuine usability upgrades over earlier versions. The lens is also 6-bit coded, so digital M bodies can read it for in-camera lens identification and correction. For buyers who also use adapters, note that the Leica 35mm Summicron-M ASPH f/2 is a lighter, slightly slower alternative worth considering if f/1.4 isn't a strict requirement.