Digital Nikon

Factors to Consider when Choosing a Digital SLR Camera

Executive Summary about Digital Nikon by. Bob Atkins

In the case of Canon, Nikon, Pentax and Sony (Minolta), their DSLRs are fully compatible with lenses used on their autofocus film based SLRs. The Olympus 4/3 system is new and earlier Olympus lenses require an adapter to mount on Olympus Four-Thirds DSLRs.

Most Nikon manual focus lenses will mount on most Nikon DSLRs and most Pentax bayonet mount lenses will mount on Pentax DSLRs, so for those systems there is good compatibility with older lenses. You can also mount many older manual focus lenses on Canon DLSRs with mechanical adapters, including Nikon, Pentax screw mount, Leica R, Contax and Olympus OM lenses.

Just about all such 3rd party lenses are available in mounts for Nikon and Canon DLSRs, but not all are available in Sony and Pentax mounts and few are available in the Olympus Four-Thirds mount. So, for example, if you really like the Tamron SP AF200-500/5-6.3 Di lens, you should be aware of the fact that it’s not currently available in a Pentax (or Olympus) lens mount, but it is available for Canon, Nikon and Sony DSLRs.

For example, both have 400mm f/2.8, 500mm f/4 and 600mm f/4 lenses (with stabilization), while Sony, Pentax and Olympus do not. Right now Canon, Nikon, and Sony offer a line of full frame DSLRs.

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