Here is what the lens looks like on the camera that it came with. The images here were made with a Canon digital SLR using an M42 adapter. I started out doing that when testing these lenses and have stuck with it since it gives me a consistent basis for comparison. I tend to think that these Auto Yashinon standard lenses are one of the great bargains in lenses. Usually you can pick one up on Ebay for between $20 and $30.
The images below are all with the lens at f/1.7.