Overview: The Canon EF 50mm
f/1.4 USM is a standard/medium telephoto lens featuring superb quality and
portability. Two high-refraction lens elements and new Gaussian optics eliminate
astigmatism and suppress astigmatic difference. Crisp images with little flare
are obtained even at the maximum aperture. The Canon EF 50mm f/1.4 USM is an
ideal lens to accompany a zoom when shooting in low-light conditions. It is the
only lens in the Canon EF System line-up to combine the extra-small Micro USM
and still provide full-time manual focusing.
Compatibility: The EF 50mm f/1.4 USM is an EF Canon lens
which means it is compatible with all Canon digital SLRs (those that accept EF
and EF-S lenses, plus those that accept EF only; which would be the Full-frame
EOS 5D Mark II), as well as Canon EOS film SLRs.
Lens Construction: The Canon EF 50mm f/1.4 lens features a
lens construction with 7 elements in 6 groups.
Diagonal Angle Of View: This Canon standard telephoto lens
provides a diagonal angle of view of 46°.
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.
Optional Accessories: You can attach optional filters to the
filter mounting thread on the front of the lens. You can also attach an optional
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