Canon EF 28–80mm lens

Canon 28–80mm f/3.5–5.6 USM

The EF 28–80mm f/3.5–5.6 is a zoom lens produced by Canon Inc. for their series of EOS single-lens reflex cameras. Canon produced eight iterations of the lens from 1989 to 1999.

The other 28–80mm lens is the Canon EF 28–80mm f/2.8–4L, which was an EF mount wide-to-normal zoom lens introduced by Canon in April 1989. Being of the "L" class, it is of completely different design and structure than the aforementioned 28–80mm f/3.5–5.6 lens.

Description

The 'L' lens is identified by a red stripe round the lens barrel. It is a totally separate classification of lens, much larger and up to three times heavier, sharing very little if any features with the non-L versions. The L version is considerably faster, with an aperture range of f/2.8–4.0 (as opposed to f/3.5–5.6). Unlike newer L-series lenses, it is not a constant aperture lens; the maximum aperture of this lens varied with the zoom (f/2.8 @ 28 mm, f/4.0 @ 80 mm). It uses a ring USM, and as several early professional USM lenses, manual focus is performed with a "focus by wire" arrangement. The manual focus ring is a digital input that directs the lens computer to adjust focus using the autofocus motor. This was done to allow full-time manual focus with the relatively new ultrasonic motors. This lens predates the lower cost, non-L versions and production of this version ended in approximately 1996.

The first iteration of the f/3.5–5.6 ("USM" in the chart below) non-L lens is identified by the metal mounting ring and DoF window. The initial USM version, while much smaller and lighter in weight than the L version, is considerably larger and heavier than later versions due to the internal optics and the use of larger but quieter and faster ring motor USM. Production of the first version ended in (approximately) 1995. This lens is unique in the 28–80 mm f/3.5–5.6 series.

USM versions II through V deleted the DoF window and are considerably lighter in weight and smaller in diameter. They retain the USM feature albeit with a lower-cost, slower but more compact micro-motor version. They share more in appearance with their non-USM siblings, as the body shape and weight are more like the non-USM than the first USM version. The USM II through V versions also incorporate a plastic lens mount.

All USM lenses (including the L version) support full-time manual focusing (FTM), which allows the user to override autofocus simply by turning the focus ring. The USM (ring motor or micromotor) feature is signified by the gold "Ultrasonic Motor" text wrapped around the barrel of the lens on non-L versions. The original lens cap 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.

Lower cost non-USM versions ("Original" and "II" in the chart below) were produced as well. A lower-cost drive system replaced the USM auto-focus system and therefore these lenses do not support FTM. AF action is considerably slower and noisier than USM versions. Lenses such as these without FTM focusing can be damaged if the focus ring is turned by hand while the lens is in the AF mode. Like the USM II-V versions, these non-USM versions have a plastic mounting ring and delete the DoF window.

All variants of the non-L 28–80 mm lens were included at times as kit lenses.

Table

Canon EF 28–80mm lens
Attribute	L	(original)	USM	II	II USM	III USM	IV USM	V USM
Key features
Image stabilizer	No
Environmental Sealing	No
USM	Yes	No	Yes	No	Yes
L-series	Yes	No
Diffractive Optics	No
Technical data
Maximum aperture	f/2.8–4	f/3.5–5.6
Minimum aperture	f/22	f/22–38	f/38	f/22–38	f/38			f/22–38
Filter diameter	72 mm	58 mm
Horizontal viewing angle	75°–30°
Vertical viewing angle	46°–17°
Diagonal viewing angle;	65°–25°
Physical data
Weight	945 g	200 g	330 g	200 g		205 g	200 g
Max. Diameter	84 mm	66.4 mm	72 mm	66.4 mm	63.5 mm	65 mm	66.4
Max. Length	119.5 mm	71.2 mm	72.5 mm	71.2 mm	68.5 mm	63.5 mm	61.4
Groups/elements	11/15	10/10	9/10	10/10	9/9		10/10
# of diaphragm blades	8	5
Closest focusing distance	0.5	0.38	0.5	0.38
Retail information
Release date	April 1989	September 1996	October 1991	April 1999	October 1993	August 1995	September 1996	April 1999
MSRP (yen)	160,700 yen	(overseas)	42,000 yen	(overseas)	30,000 yen

External links

Wikimedia Commons has media related to Canon EF 28-80mm F3.5-5.6.

At Canon Museum's website:
- EF 28–80mm f/2.8–4L USM
- EF 28–80mm f/3.5–5.6 USM (version 1)

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 lenses	EF 8–15mm Fisheye EF 135mm with Softfocus

Tilt-shift	TS-E 17mm TS-E 24mm TS-E 45mm TS-E 90mm

Macro	EF 50mm Compact Macro EF-S 60mm Macro MP-E 65mm 1–5x Macro EF 100mm Macro EF 180mm Macro

EF-M zoom	EF-M 11–22mm EF-M 15–45mm EF-M 18–55mm EF-M 55-200mm

EF-M prime	EF-M 22mm

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 35–80mm EF 35–105mm EF 35–350mm EF 55–200mm EF 70–210mm EF 80–200mm EF 90–300mm EF 100–200mm EF 100–300mm

Discontinued prime	EF 15mm Fisheye EF 1200mm

This article is issued from Wikipedia - version of the Monday, March 14, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.