Hey there. I am just a bit confused when reading about different kinds of lenses. Could someone basically give me the anatomy of a lens' title??? Like this for example... How does lens 1 compare to lens 2 in "real life terms"? What do the numbers represent??? 2> Tamron 28-200 mm F/3.8-5.6 XR Di Aspherical IF Macro AF Lens F/Canon EF 2> Nikon 55-200 mm F/4-5.6G ED AF-S DX Nikkor Lens Keep in mind I am just getting into photography and know nothing about lenses - at all. I just picked these two as examples off of a website. Thanks for the help guys and gals! Oh yeah...and I just got a Fuji S1 for next to nothing to start out on...anyone ever used one of these?? THANKS!