Английская Википедия:Canon EF 75–300mm lens

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Шаблон:Short description

Файл:Canon EF 75-300 f-4-5.6 III.jpg
The Canon EF 75–300mm Шаблон:F/4–5.6 III lens.

Introduced in 1991, the Canon EF 75–300mm Шаблон:F/4–5.6 lens is a telephoto zoom lens for Canon EOS single-lens reflex cameras with an EF lens mount. There are 3 basic types of the lens: the IS USM (Image Stabilization, Ultra Sonic Motor), the USM (USM, no IS) and non-USM (no USM, no IS). All 3 types are generally considered to be low-end consumer-level lenses.

The Canon EF 75–300mm f/4–5.6 IS USM Lens was Canon's first Image Stabilized lens. Even with IS it is considered a consumer-grade lens.

Description

The non-USM versions are generally considered very low grade consumer lenses with the USM versions only slightly superior in build quality and 'feel'. None of the versions (USM or not) support full-time manual (FTM) focusing. The optics are similar in the IS USM and USM versions. Except for the USM III, the USM feature is signified by the gold "Ultrasonic Motor" text. The USM III is identified by a gold USM Logo and an adjacent gold marking of "Ultrasonic". The original USM lens caps also says "Ultrasonic" although caution is advised as lens caps are often swapped and should not be counted upon as indicative of the actual lens' features. Ultrasonic lenses will have in small gold font "Ultrasonic" and a series of hashed lines applied completely around the lens at the forward end.

Specifications

Canon EF 75–300mm Шаблон:F/4–5.6 lens
Attribute (original) USM IS USM II II USM III III USM
Key features
Image stabilizer colspan=2 Шаблон:No Шаблон:Yes colspan=4 Шаблон:No
Environmental Sealing colspan=7 Шаблон:No
USM Шаблон:No colspan=2 Шаблон:Yes Шаблон:No Шаблон:Yes Шаблон:No colspan=2 Шаблон:Yes
L-series colspan=7 Шаблон:No
Diffractive Optics colspan=7 Шаблон:No
Technical data
Maximum aperture Шаблон:F/4–5.6
Minimum aperture Шаблон:F/45 Шаблон:F/32-45 Шаблон:F/45 Шаблон:F/32–45
Filter diameter 58 mm
Horizontal viewing angle 27° - 6°50’
Vertical viewing angle 18°11’ - 4°35’
Diagonal viewing angle 32°11’ - 8°15’
Physical data
Weight 500 g 495 g 650 g 480 g
Max. Diameter 73.8mm 71.1mm 78.5mm 71mm
Max. Length 122mm 138.2mm 122mm
Groups/elements 9/12 9/13 10/15 9/13
# of diaphragm blades 7 8 7
Closest focusing distance 1.5 m
Retail information
Release date March 1991 June 1991 September 1995 July 1995 March 1995 April 1999
MSRP (yen) 37,000 yen 41,000 yen 88,000 yen (overseas) 43,800 yen (overseas) 43,800 yen

Reviews

Canon EF 75–300 Review — Lens Reviews

External links

Шаблон:Commonscat multi

Шаблон:Canon EF lenses


Шаблон:Photo-stub