We know their specs; but how about their lenses? How does one find out with lenses are great and which lenses stink?

Fredmiranda.com has a user review section for lenses (http://www.fredmiranda.com/reviews/) and dpchallenge.com lists the top user photos taken with each type of lens (http://dpchallenge.com/lens.php).

Thanks. Actual tests would be great, though.

www.photozone.de is the place to go. Terrific, dull, impartial reviews of most of the kit you can actually afford.

For Nikon, check out some of the links here: http://www.nikonlinks.com/equipment_lenses_general.htm

Thanks, Mark. I didn't know that Voigt had this lens: http://www.photozone.de/8Reviews/lenses/voigtlander_lanthar_180_4_nikon/index.htm

I wonder if it's 9 blades or 10. 10 would produce better bokeh, yes?

Ken Rockwell's Nikon lens guide:

http://kenrockwell.com/nikon/nikkor.htm

Plus, the Nikon compatibility list:

http://www.kenrockwell.com/nikon/compatibility-lens.htm

heath