The Pentax smc DA 21mm F3.2 AL Limited is a moderate wide angle lens announced by
Pentax
was a Japanese camera and optical equipment manufacturer. Currently, it exists as the Pentax Life Care Business Division of Hoya's medical endoscope business, as well as the digital camera brand of Ricoh Imaging, a subsidiary of Ricoh.
Penta ...
on February 13, 2006. It is one of the five very compact "Limited"
prime lens
In film and photography, a prime lens is a fixed focal length photographic lens (as opposed to a zoom lens), typically with a maximum aperture from f2.8 to f1.2. The term can also mean the primary lens in a combination lens system.
Confusion ...
es for
APS-C
Advanced Photo System type-C (APS-C) is an image sensor format approximately equivalent in size to the Advanced Photo System film negative in its C ("Classic") format, of 25.1×16.7 mm, an aspect ratio of 3:2 and Ø 30.15 mm field d ...
format cameras. Like its siblings, it was replaced in 2013 with a version that is HD-coated and has rounded aperture blades.
References
www.dpreview.com
External links
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{{Pentax K-mount lenses
21
Pancake lenses
Camera lenses introduced in 2006