Canon_EF_14mm_lens Knowpia

The Canon EF 14mm f/2.8L USM is an ultra wide angle prime lens. It is the widest prime lens in the Canon EF series. Because it is corrected for a rectilinear projection, the field of view is less than that of the Canon 15mm fisheye.

The front element of the lens is so prominent that it does not allow use of filters on the front. Filters are instead mounted on the rear.

On August 20, 2007, Canon announced the EF 14mm f/2.8L II USM lens, which was released that October. This lens dramatically improved sharpness and chromatic aberration, and is especially good at close focusing distances. It has replaced the earlier lens.

Specifications edit

Attribute	f/2.8L USM	f/2.8L II USM
Image
Key features
Full-frame compatible	Yes
Image stabilizer	No
Ultrasonic Motor	Yes
Stepping Motor	No
L-series	Yes
Macro	No
Technical data
Focal length	14 mm
Aperture (max/min)	f/2.8 / f/22
Construction	13 elements / 10 groups	14 elements / 11 groups
# of diaphragm blades	5	6 (circular aperture)
Closest focusing distance	0.25 m (10.0 ")	0.20 m (7.9 ")
Max. magnification	0.1 x
Horizontal viewing angle	104 °
Vertical viewing angle	81 °
Diagonal viewing angle	114 °
Physical data
Weight	560 g (19.8 oz)	645 g (22.8 oz)
Maximum diameter	77 mm (3.0 ")	80 mm (3.2 ")
Length	89 mm (3.5 ")	94 mm (3.7 ")
Filter diameter	Gel filter holder at rear of lens
Accessories
Lens case	LP1016
Lens hood	Built-in^[1]
Retail information
Release date	December 1991	September 2007
Currently in production?	No	Yes
MSRP US$	298,000 yen	307,000 yen / $2,885.41