Tuesday, August 3, 2010
Low-Cost Lens Solutions
Think about using a lens adapter to get lower-cost specialty lenses
Can I Use This Lens On This Camera?
Whether you can use a given lens on a given camera body depends on several things. First, an appropriate adapter must be available. Second, the flange back distance must be compatible. Third, the lens must not physically interfere with the DSLR’s mirror, which swings up and down. Fourth, the lens should cover the camera format.
Adapters are available to mount a wide range of lenses on a wide range of bodies. See the Resources box for some sources (or do a web search for “A to B adapter,” where A is your camera body and B is the lens you wish to use with it).
Some lenses have designs that protrude into the camera body, either at all times or during focusing. These lenses shouldn’t be used on cameras where they’ll strike the DSLR mirror. It’s possible, with some cameras, to use such lenses with the mirror locked up, but you can’t see through the DSLR’s optical viewfinder with the mirror locked up to compose and focus, and you can damage the camera and lens should the mirror come back down with the lens attached, so it’s best to avoid such lens/camera combinations.
The new mirrorless interchangeable-lens cameras (Olympus PEN E-P1, E-PL1 and E-P2, Panasonic Lumix DMC-G2, G10, GF1 and GH1, Samsung NX10 and Sony Alpha NEX-3 and NEX-5) don’t contain SLR mirror boxes and thus have a very short flange back distance, so they can accept pretty much any lens for which an adapter can be found, and the lens-and-lens-adapter combination will be able to focus out to infinity.
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