Minolta AF 70-210mm f/4 lens

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Minolta 70-210mm f/4 Macro
The "beercan"
Maker Minolta
Key features
Ultrasonic motor No No
Image stabilization No No
Technical data
Type Zoom
Focal length 70-210mm
Crop factor 34.3°-11.7°
Aperture (max/min) f/4 - f/32
Construction 9 groups / 12 elements
# Diaphragm blades 7 blades, straight
Close focus distance 1.1 m
Max. magnification 1/4
Max. length 168 mm
Weight 695 g
Filter diameter 55 mm
Lens hood Metal or plastic clip-on
Angle of view
Horizontal 34.3°-11.7°
Introduced 1985
Retail info
MSRP US$ As of 2009, frequently available second-hand on auction websites at prices ranging between £120 and £150.

The Minolta AF 70-210mm f/4 lens is an autofocusing telephoto photographic lens compatible with cameras using the Minolta AF lens mount. The lens is colloquially known as the "beercan" by Minolta camera users because the lens shape and size closely match the proportions of a typical aluminum beer can.

Sony Alpha 55 with Minolta 70-210 F/4 "Beercan"

It was introduced in 1985 at the launch of the Minolta Maxxum/Dynax/Alpha 7000 camera (the first widely successful autofocus SLR) and remained in production for many years. Two years earlier, the lens had been introduced as a one-touch zoom in the manual-focus Minolta SR mount (as a "plain" MD lens). However, production slowed and then eventually stopped for both the AF and MD versions; its successors, the 70-210/3.5-4.5 and 70-210/4.5-5.6 had none of the qualities of the original and build and image quality decreased.[citation needed]

It remains popular, however, for use on digital single lens reflex cameras using the AF system, such as the Konica-Minolta Maxxum 7D or the Sony α. Although relatively bulky and weighty, the lens is valued for its solid build, sharpness, constant maximum aperture and smooth bokeh effect, though it suffers from more pronounced aberrations than equivalent modern designs. It provides a 1:4 magnification (at minimum focus, an object records at 1/4 its size on film or sensor).

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