Canon EF 20-35mm lens explained

The EF 20–35mm lens is a wide-angle lens made by Canon Inc., with an EF mount. There are two models, an L-series 2.8L^[1] and a consumer-grade 3.5–4.5.^[2]

Table

Attribute	2.8L	3.5–4.5
Image
Key features
Image stabilizer	No
Environmental Sealing	No
USM	No	Yes
L-series	Yes	No
Diffractive Optics	No
Technical data
Maximum aperture	2.8	3.5–4.5
Minimum aperture	32	22–27
Filter diameter	72 mm	77 mm
Horizontal viewing angle
Vertical viewing angle
Diagonal viewing angle
Physical data
Weight	570 g	340 g
Max. Diameter x Length	89 mm x 79.2 mm	83.5 mm x 68.9 mm
Groups/elements	12/15	11/12
of diaphragm blades	8	5
Closest focusing distance	0.5 m	0.34 m
Retail information
Release date	October 1989	March 1993
MSRP ¥	¥190,700	¥77,000

Successor lenses

The 20-35mm lens was followed by two other L-series ultra-wide lenses:

• EF 17–35mm 2.8L
• EF 16–35mm 2.8L USM
• The EF 17–40mm 4L USM is another wide-angle lens that has a similar focal range

References

1. Web site: EF20-35mm f/2.8L. Canon Camera Museum. Canon Inc.. 2016-05-18.
2. Web site: EF20-35mm f/3.5-4.5 USM. Canon Camera Museum. Canon Inc.. 2016-05-18.