Espressogeek you made my day! I can think of many times that I've seen an image, on a wall, in a book or here on the web that sold me on glass....and inspired me to work toward the same result with what glass I had been dealt
......or work on my technique;(
The Ultron is a bit large but I am thrilled to have it. If it was a bit smaller it would likely be the #1 for my R D1. It may turn out to be yet, but I am new to this gear so my 35 Summicron is afixed as of this writing until I decide wider is better. When I go out with a Leica M and my 50mm lens, I never think twice so the 35 on the RD is right in there. If I didn't have that lens (the 35) already I might try the 40mm 1.4 This seems like a lot of lens for $3-400.
Prior to this camera I was shooting with the Pentax IST DS and had the fortune to come into an A 28 f 2 that Pentax made. It is a really sweet lens (see here:
and I really like that focal length. It brings back early days with a CL and 40 Rokkor.
I am happy to also have a 21 to play with. That focal length is nice for the R D1 but I like to travel light and have a lens that will isolate my subject so the 28 and longer will do that for me.
By all means, pick up an Ultron 28! You won't be sorry.