One of my favorite lenses.

[brusby]

One of my faves, Leica Elmar 90mm f4 three element

L1007920 by Brusby, on Flickr

 

[p.giannakis]

Difficult to pick one favourite but I really like the Thoriated Pancolar

 

[38Deardorff]

I have a soft spot for Dagors... especially this 8 1/2" gold rim. Pretty much my usual lens on 5x7"