Good things that come in small packages!
I have been testing the Voigtlander Heliar Ultra Wide-Angle 12mm f/5.6 Lens with the Fuji M mount adapter on the X Pro 1 for the last week or so and have to admit that I am both impressed and love use and feel of this lens! It is well made and smoooooth to operate!
I have tested it both on the Kipon adapter and the new Fuji M mount adapter and have to say that the differences between the two are major due to the fuji’s ability to adjust corner color and darkened corners live with version 1.11 firmware! Pincoushion adjustments still require you to shoot and adjust.
I adjusted the pincushion by taking a picture of the pattern of 2×4’s on the surface of a deck. This allows you to maintain straight lines. I found for the 12mm that an adjustment of +4 was perfect.
I took the 12mm out to two locations for testing, Shem Creek in the Charleston, SC area and the waterfront in Georgetown SC. Both locations provides nice vistas and shrimp boats full of color and character.

Stormy Seas at the dock. Voigtlander Heliar Ultra Wide-Angle 12mm f/5.6 Lens. Notice the focus from about 3 inches to infinity.
As you can see, the DOF of the 12mm is simply amazing. The cleat was about 3 inches from the camera.
Notice the light rays coming down from right to left thru the clouds! The lens is VERY sharp and a real pleasure to use!
Let me know what you think!