EF 100mm f2 USM

introduced 1991

Despite the popularity of zoom lenses, there is still a strong demand for fixed focal lengths - especially in the medium telephoto wide-aperture range. The new EF 100mm f2 USM has been developed in response to this demand. It provides sharp imaging performance and good clarity even at maximum aperture.

Portraiture will be a popular application for this lens. It will allow available light shooting in conditions which might otherwise have required flash.

The lens uses a rear focusing system. This reduces the effort needed to move the focusing elements, with the result that high-speed focusing is possible from the ultrasonic motor. It takes only 0.4 sec to switch from infinity focusing to the closest focusing distance. The overall lens length remains unchanged at other types of effect filter.

As with the new EF 14mm lens, manual focusing is possible without switching from AF mode.

Focal length and maximum aperture: 100mm f2
Lens construction: 8 elements in 6 groups
Diagonal angle-of-view: 24
Focus adjustment: rear focusing system with USM
Closest focusing distance: 0.9 m/3 ft
Filter size: 58mm
Length x max. diameter, weight: 73.5 x 75mm, 460g

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