But other factors have come into play over the past few years, not the least of which is the abundant availability of dozens of interesting lens options for DSLR users. There are more new and innovative lens choices on the market than have ever existed before. The DSLR revolution has brought millions of new video shooters to the market, both amateur and professional. This has resulted in greater economies of scale than have existed in the lens market for many years.
The world of lens mounts and lens-mount adapters is filled with arcane and specialized terms, but here’s a breakdown of the most popular options available.
Nikon. Nikon cameras use the classic and extremely popular Nikon F lens mount. This mount has been basically unchanged for over 50 years, so there are millions of Nikon F-mount lenses out there, both manual-focus and autofocus versions.
Canon. Canon currently has two mount/lens styles available. For full-frame cameras like the Canon EOS 5D Mark II, there’s a line of EOS-mount lenses available. For cropped-sensor (APS-C) cameras like the 7D, T3i and 60D, there’s a line of EF-S lenses. There’s one-way lens compatibility within the Canon DSLR family; the crop-sensor cameras can use the full-frame EOS lenses, but the crop-sensor-only EF-S lenses can’t be used on a full-frame Canon camera.
Micro 4/3. Micro 4/3 is a relatively new development in the market, first popularized in Panasonic’s Lumix DMC-GH1, but now has become a standard with many other still/video cameras by different manufacturers.
A-Mount and E-Mount. Both are proprietary Sony mounts used widely on Sony’s latest Alpha (A-mount) and NEX (E-mount) lines of cameras.