Camera Lens Conundrum
If you have a "nice" (i.e. expensive) camera, they typically come with interchangeable lenses as a way to provide more flexibility for the photography process; this is true of both digital and traditional SLR models (Single Lens Reflex). The lenses themselves have a lot of information on them that is pretty much indecipherable unless you are "in the business". So, if you are starting out and maybe just trying to compare lenses and features, HowToGeek has a very handy guide to all the abbreviations and acronyms you may encounter with most of the common brands - Nikon, Canon, etc.