In my continuing research into cameras and lenses, I ran across this topic at another forum, and thought it might be interesting to see what y'all have to say.

Specific lenses have been discussed here before, or comparisons between two lenses, or questions about what lenses to buy, but this refers just to what you are using or have used.

So, regardless of camera brand, what is your favorite lens and why?

On another sidenote, feel free to mention your least favorite lens that you have used.

For instance, I have read in other forums suggestions to bypass the standard kit 18-55mm lens in favor of some other lens because they did not like the results.

(...forgive me if this is somewhat redundant, since I haven't been here all that long.)

Maria