Leica Super-APO-Summicron-SL 21mm F2 ASPH Lens

The Leica Super-APO-Summicron-SL 21mm F2 ASPH is a wide-angle prime lens designed for full-frame mirrorless cameras using the L-Mount system. Built around a fixed 21mm focal length, it offers a maximum aperture of f/2, giving photographers meaningful light-gathering capability for a wide-angle lens in this class. The lens supports both autofocus and manual focus operation, making it adaptable across a range of shooting styles and workflows.

It accepts 67mm screw-in filters, a practical consideration for photographers who regularly use polarizers, ND filters, or protective glass. Weighing in at 800g, it carries some heft — reflecting the optical ambition behind the design — though this is worth factoring in for handheld or travel use. Notably, image stabilization is not included in the optical design, so shooters will need to rely on any in-body stabilization their camera body provides.

As a full-frame lens on the L-Mount platform, it is compatible with the growing ecosystem of L-Mount bodies from Leica and other manufacturers who have adopted the standard. For landscape, architectural, interior, and street photographers seeking a wide, fast prime on the L-Mount system, the Super-APO-Summicron-SL 21mm F2 ASPH presents a compelling option worth serious consideration.