Lens Test: Leica Tri-Elmar-M 16-18-21mm f/4 ASPH

Specifications

16-, 18-, 21mm (16.27-, 17.91-, 20.71mm tested), f/4 (f/4.06, 4.21, 4.14 tested), 10 elements in 7 groups. Focusing turns 60 degrees counterclockwise. Focal lengths marked at 16-, 18-, 21mm.

• Diagonal view angle: 90, 84, 75 degrees (digital).

• Weight: 11.36 oz.

• Filter size: E49 screw in.

• Mounts: Leica M.

• Included: Screw-on lenshood, softcase.

• Street price: $3,495.

Subjective Quality Factor