Ken Rockwell has a very good camera / lens review site that should help you gain some insight into what you may want to buy. These links may be helpful. It will also show what is compatible with what and comparisons between cameras . Canon Cameras Lenses Nikon Cameras Lenses Leica Cameras Lenses Fuji Cameras and lenses Sony Cameras and lenses Minolta Cameras and lenses Pentax Cameras and lenses Contax Cameras and lenses Sigma Lenses Tokina Lenses There is also a camera finder on Flickr so you can get a feel for what's possible. https://www.flickr.com/cameras Please feel free to add reviews. Please bear in mind though, that there's no substitute for actually holding a camera before you buy it. Hope this helps.