Canon EF 20-35mm lens

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 f/2.8L[1] and a consumer-grade f/3.5–4.5.[2]

Table
Attributef/2.8Lf/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 f/2.8 f/3.5–4.5
Minimum aperture f/32 f/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 f/2.8L
  • EF 16–35mm f/2.8L USM
  • The EF 17–40mm f/4L USM is another wide-angle lens that has a similar focal range
gollark: The datasheet seems to suggest it has hardware gzip, which is kind of weird.
gollark: The HDMI input is interesting.
gollark: https://www.cnx-software.com/2021/12/16/rockchip-rk3588-datasheet-sbc-coming-soon/ apparently exists now, but I don't know where their information is from.
gollark: ... yes, I just forgot geography, oops.
gollark: China is something like 8 hours behind timezoneuously.

References
  1. Canon Inc. "EF20-35mm f/2.8L". Canon Camera Museum. Retrieved 2016-05-18.
  2. Canon Inc. "EF20-35mm f/3.5-4.5 USM". Canon Camera Museum. Retrieved 2016-05-18.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.