http://www.squidoo.com/the-best-reviews-digital-slr-camera Types of digital SLRs
Interchangeable-lens full system digital SLR
These are what the bulk mean when they are saying "digital SLR," which they're the first focus of this shopping forguide. because the name implies, the potential to induce rid of 1 lens and replace it with another-to go from, say, ultra-wide-angle to supertelephoto-is what sets these cameras apart....