Canon EF 28-70mm lens

EF 28–70mm f/2.8L
Maker	Canon
Technical data
Type	Zoom
Focus drive	Ultrasonic motor
Focal length	28–70 mm
Aperture (max/min)	f/2.8–f/22
Close focus distance	0.5 m
Max. magnification	0.18
Diaphragm blades	8
Construction	16 elements in 11 groups
Features
Short back focus	No
Lens-based stabilization	No
Macro capable	No
Application	Pro Standard Zoom
Physical
Max. length	117.6 mm
Diameter	83.2 mm
Weight	880 g
Filter diameter	77 mm
Accessories
Lens hood	EW-83B
History
Introduction	November 1993

The Canon EF 28–70mm f/2.8L is an EF mount wide-to-normal zoom lens made by Canon from 1993 to 2002. It was replaced by the 24–70mm f/2.8L.

Among standard zoom lenses, it is known for very good contrast and sharpness and for its extremely low chromatic aberration and barrel distortion.[1] It has a metal body and neutral color rendition. Although discontinued since 2002 it is still a high ranking lens according to DxOMark among Canon zoom lenses and other standard zoom lenses. Like many other zoom lenses, it exhibits some barrel distortion at the wide end of its range.

A unique aspect of the 28–70 mm f/2.8L (and 24–70 mm f/2.8L) is that its barrel extends as it zooms toward its shortest focal length. When used with the supplied "petaled" lens hood, which attaches to a non-moving part of the lens, this extension results in a properly matched shade at every angle of view. Most zoom lens hoods are designed for only the widest angle of view, offering progressively inadequate shade at longer focal lengths.

Canon Standard Zoom Series

Canon EF 28–135mm f/3.5–5.6 IS USM
Canon EF 17–40mm f/4L USM
Canon EF 24–70mmf/2.8L USM
Canon EF 24–105mm f/4 IS USM

References

http://www.dxomark.com/Lenses/Canon/EF28-70mm-f-2.8L-USM-mounted-on-Canon-EOS-5DS-R__1009

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

[1] ttp://www.dxomark.com/Lenses/Canon/EF28-70mm-f-2.8L-USM-mounted-on-Canon-EOS-5DS-R__1009

Canon EF/EF-S/EF-M lenses
EF-S zoom	EF-S 10–18mm EF-S 10–22mm EF-S 15–85mm EF-S 17–55mm EF-S 17–85mm EF-S 18–55mm EF-S 18–135mm EF-S 18–200mm EF-S 55–250mm
Ultra-wide zoom	EF 11–24mm EF 16–35mm EF 17–40mm
Standard zoom	EF 24–70mm EF 24–105mm EF 28–135mm EF 28–300mm
Telephoto zoom	EF 70–200mm EF 70–300mm EF 75–300mm EF 100–400mm EF 200–400mm
Wide-angle prime	EF 14mm EF 20mm EF 24mm EF-S 24mm EF 28mm EF 35mm
Standard prime	EF 40mm EF 50mm
Telephoto prime	EF 85mm EF 100mm EF 135mm EF 200mm
Super telephoto prime	EF 300mm EF 400mm EF 500mm EF 600mm EF 800mm
Distorting lens	EF 8–15mm Fisheye
Tilt-shift	TS-E 17mm TS-E 24mm TS-E 45mm TS-E 50mm TS-E 90mm TS-E 135mm
Macro	EF-M 28mm Macro EF-S 35mm Macro EF 50mm Compact Macro TS-E 50mm MACRO EF-S 60mm Macro MP-E 65mm 1–5x Macro TS-E 90mm Macro EF 100mm Macro TS-E 135mm Macro EF 180mm Macro
EF-M zoom	EF-M 11–22mm EF-M 15–45mm EF-M 18–55mm EF-M 18–150mm EF-M 55–200mm
EF-M prime	EF-M 22mm EF-M 28mm Macro EF-M 32mm
Lens accessories	Extender EF
Discontinued zoom	EF 17–35mm EF 20–35mm EF 22–55mm EF 24–85mm EF 28–70mm EF 28–80mm EF 28–90mm EF 28–105mm EF 28–200mm EF 35–70mm EF 35–80mm EF 35–105mm EF 35-135mm EF 35–350mm EF 38–76mm EF 50–200mm EF 55–200mm EF 70–210mm EF 80–200mm EF 90–300mm EF 100–200mm EF 100–300mm
Discontinued prime	EF 15mm Fisheye EF 135mm with Softfocus EF 1200mm