Leica SUMMILUX-SL 50mm f/1.4 ASPH., black anodized finish

Leica Summilux-SL 50 f/1.4 ASPH. — Key Specs & Highlights

• World's most compact autofocus 50mm f/1.4: Just 74 mm diameter, 75.5 mm length, and 584 g — redefining what a fast standard prime can be.
• f/1.4 maximum aperture: Outstanding low-light performance and beautiful subject isolation with natural, smooth bokeh.
• 11 elements in 6 groups: 2 aspherical surfaces, Precision Voice-Coil drive for fast and silent autofocus.
• 11 aperture blades: Exceptionally round bokeh at all aperture settings, minimum aperture f/16.
• 50 cm minimum focus distance: Maximum magnification 1:7.6, E67 filter thread.
• IP54-certified all-metal body: AquaDura hydrophobic coating on all external elements, firmware updatable via camera.

A New Benchmark — The World's Most Compact Autofocus 50mm f/1.4

The Leica Summilux-SL 50 f/1.4 ASPH. sets a new standard for what a fast standard prime lens can be. At just 74 mm in diameter, 75.5 mm in length, and 584 g, it is the world's most compact and lightweight autofocus lens at this focal length and maximum aperture — making it not only an optical benchmark, but a genuinely portable everyday companion for the SL-System. Whether you are shooting available-light reportage, portraits, or creative work that demands shallow depth of field, this lens delivers with authority.
 

Optical Excellence

The Summilux-SL 50 f/1.4 ASPH. is built around a sophisticated optical construction of 11 elements in 6 groups, featuring 2 aspherical surfaces. This highly refined design reduces monochromatic and chromatic aberrations to a minimum — delivering Leica's characteristic sharpness, colour fidelity, and contrast across the entire image field, even wide open at f/1.4. The Precision Voice-Coil autofocus drive ensures exceptionally fast and silent focusing movements. The 11-blade aperture produces an exceptionally round diaphragm opening for the smooth, circular bokeh for which Summilux lenses are renowned, with a minimum aperture of f/16.
 

Fast, Silent Autofocus

Internal focusing keeps the overall length of the lens constant throughout the focusing range, and the Precision Voice-Coil drive delivers fast, precise, and virtually silent autofocus — ideal for both photography and video. The minimum focusing distance of 50 cm (maximum magnification 1:7.6) enables compelling close-up work at maximum aperture. The E67 filter thread accepts standard filters. Lens firmware can be updated directly via the camera, ensuring the lens continues to benefit from improvements over time.
 

Compact Without Compromise

At less than half the weight and length of the previous SL 50mm prime, the Summilux-SL 50 f/1.4 ASPH. represents a remarkable engineering achievement. Its 74 mm diameter and 75.5 mm length (116.3 mm with lens hood) make it one of the smallest lenses in the SL lineup — yet it maintains the full aluminium metal build quality, dust and splash water protection, and the optical rigour that define every Leica SL lens. AquaDura hydrophobic coating on all external elements repels moisture and grease in all conditions.
 

Made for the SL-System — and Beyond

Designed as the perfect companion for the Leica SL3-P and the broader SL-System, the Summilux-SL 50 f/1.4 ASPH. uses the L-Mount — making it fully compatible with all L-Mount cameras from Leica, Panasonic, and Sigma. Its compact dimensions and outstanding optical performance make it equally well-suited to hybrid shooting workflows, where it works seamlessly alongside the SL3-P's 8K video capabilities.
 

What's in the Box:

• Leica Summilux-SL 50 f/1.4 ASPH. lens
• Lens hood
• Front and rear lens caps

 

Leica Summilux-SL 50 f/1.4 ASPH. — Frequently Asked Questions

What makes this Summilux-SL 50 f/1.4 different from the previous version?

The new Summilux-SL 50 f/1.4 ASPH. is dramatically more compact and lightweight than its predecessor — weighing 584 g compared to 1,065 g, and measuring just 75.5 mm in length versus 124 mm. Leica describes it as the world's most compact autofocus lens at this focal length and maximum aperture, without any compromise in optical quality.

What is the minimum focusing distance?

50 cm — closer than the previous SL standard prime at this aperture, enabling compelling close-up and detail work at maximum aperture.

How many aperture blades does it have?

11 aperture blades, producing an exceptionally round diaphragm opening for smooth, circular bokeh across all aperture settings.

Is the lens weather-sealed?

Yes — the all-metal body meets IP54 standards for dust and splash resistance, and the front element features AquaDura hydrophobic coating to repel moisture and grease.

Is this lens suitable for video as well as photography?

Yes. The internal focusing system and silent motor mean the lens length never changes during focusing and focus noise stays off audio tracks — making it an excellent choice for video work alongside the SL3-P's 8K capabilities.

Is it compatible with other L-Mount cameras?

Yes. The Summilux-SL 50 f/1.4 ASPH. uses the L-Mount and is fully compatible with all L-Mount cameras from Leica, Panasonic, and Sigma.