Originally Posted by kuuan
I travel a lot, my most used camera, for being very small but powerful, is a Sony NEX5n, and my most used lens a Voigtlaender f4.5/15, which on that camera makes a 21/22mm lens equivalent
I love the Voigtlander 15 on the Ricoh GXR-M for the same reason. My version is the first, non-coupled version, but that's fine with liveview and the very deep depth of field.
The Zeiss 21mm on the M9 is one of my favourites for travel, and last overseas trip, I found myself using 21 and 50 most of the time.