EF 14mm f/2.8L USM
-Lens construction: 14 elements in 10 groups;
-Diagonal angle of view: 114°;
-Focus adjustment: Rear focusing system with USM;
-Closest focusing distance: 0.25m / 0.8ft;
-Filter size: Rear drop-in gelatin filter holder;
This ultra-wide-angle lens has the shortest focal length in the L-series. Element 2 is an aspherical lens to correct distortion.
Other aberrations such as astigmatism are also corrected, resulting in idea image quality.
The lens has a fixed petal-type hood and a gelatin filter holder at the rear.
Canon EF 14mm 1:2.8L USM. Lens structure (elements/groups): 14/10, Closest focusing distance: 9.84" (0.25 m), Diagonal angle of view (max): 104°. Color of product: Black. Diameter: 3.03" (7.7 cm), Length: 3.5" (8.9 cm), Weight: 19.8 oz (560 g). Magnification: 0.10x