Leica Super-APO-Summicron-SL 21mm f/2 ASPH.

Professional wide-angle prime with bright aperture, weather sealing, advanced optics for Landscape, architecture, astrophotography.
Ultra wide-angle prime lens f/2 sl-mount
Architecture
Landscape
Lens Review: Leica Super-APO-Summicron-SL 21mm f/2 ASPH.
The Leica Super-APO-Summicron-SL 21mm f/2 ASPH. is an ultra wide-angle prime lens designed for full-frame Leica L-mount mirrorless cameras. With a bright f/2 maximum aperture, it offers excellent performance in low-light conditions and provides precise depth-of-field control, making it ideal for landscape, architecture, and astrophotography. The optical design includes 14 elements in 11 groups, featuring four aspherical elements to minimize aberrations and deliver exceptional image quality. The lens boasts a robust construction with weather sealing, ensuring reliability in various shooting environments.
Specifications
Lens type
Ultra wide-angle prime lens
Max Format size
Full Frame
Focal length
21 mm
Image stabilization
No
Lens mount
Leica L
Maximum aperture
f/2
Minimum aperture
f/22
Aperture ring
No
Number of diaphragm blades
Not specified
Optical construction
14 elements in 11 groups (4 aspherical elements)
Minimum focusing distance
0.25 m (9.8 in)
Maximum magnification
0.14x
Filter size
82 mm
Dimensions
88 mm (diameter) x 102 mm (length)
Weight
800 g (1.76 lbs)
Weather sealing
Yes
Usage
architecture, landscape
Video Reviews
Sample Images