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Overview: The Canon EF 28mm f/1.8 USM is an ultra-wide-angle
Compatibility: The EF 28mm f/1.8 USM is an EF Canon lens;
meaning it's compatible with all Canon digital SLRs (those that accept EF and
EF-S lenses, plus those that accept EF only), as well as Canon EOS film SLRs.
Lens Construction: The Canon EF 28mm f/1.8 USM features a
lens construction with 10 elements in 9 groups.
Angle Of View:
- Diagonal: 75°
- Vertical: 46°
- Horizontal: 65°
Ultrasonic Motor (USM): With the Ultrasonic Motor (USM), you
can expect fast and quiet focusing capability.
Auto/Manual Focus: To shoot in Autofocus mode, set the focus
mode switch on the lens to AF. To manually focus the camera, set the switch to MF,
and focus by turning the focusing ring. The focusing ring always works, regardless
of the focus mode.
Focusing Range: You can set the focusing distance range from
0.82' (10") to infinity. By setting a suitable focusing distance range, the
autofocusing time will be shorter.
Infinity Compensation Mark: To compensate for shifting of the
infinity focus point that results from changes in temperature, the lens features
an Infinity Compensation Mark. The infinity position at normal temperature is the
point at which the vertical line of the L mark is aligned with the distance
indicator on the distance scale.
Infrared Index: The infrared index corrects the focus setting
when using monochrome infrared film. Focus on the subject manually, then adjust
the distance setting by moving the focusing ring to the corresponding infrared
Optional Accessories: You can attach optional 58mm filters
to the mounting thread on the front of the lens. You can also attach the optional
Canon EW-63II lens hood.