Auto REVUENON 55mm F 1.4 

Focal length: 55mm
Mount: M42
Aperture: F 1.4 - F 16
Min focus distance: 0.50m
Length (from flange): 47/54mm
[+ 27mm for the adapter], rear element protrudes 9mm
Diameter: 67mm
Weight: 315gr.

Some pictures:

A7 and the lens.

Sample pictures: You may click on the sample image (except closest focus) for full resolution. The full resolution image opens in a new window, so you can keep it open for comparison. Focus is on the satellite dish to the right of the big solar panel near the center of the photo.

F 1.4, at ISO 100

F 8.

F 16.

Closest focus  is 37cm from the outermost edge of the lens, F 8. Focus on the program wheel of the camera.

This lens was one of the sought after luminous lenses for SLR cameras. They have quite heavy, yellow tinted glass. A major part of these were made by Tomioka for different brands. Tomioka made these lenses for Revue, I had a second one which was marked "Tomioka" and "Revuenon". As I couldn't see any difference between the performance of the two, I gave the "Tomioka"-marked lens to a friend, who absolutely wanted it. Some time ago there was a hype about these lenses and they sold for high prices, but this is more ore less over. The daylight setting of the camera compensates the yellow tint, which isn't the case with auto-white-balance on my camera.

Wide open it's fine for a F 1.4, there is a hint of shaded upper edges and some softness, but it's perfectly usable. Stopped down it's sharp.
The lens has good close focussing capablities. It is relatively big and heavy for a F 1.4 lens. A nice lens which offers two more usable stops than a standard lens, or a 4x ISO gain.