I have this lens.
The one with an orange ring right?
I am using it for the 7D.
Construction is quite solid. ( Metal not some plasticky stuff )
Unfortunately for performance wise, I can't comment.
Cause my lens got attacked by fungus, and now there are markings in the inner elements
However, it is good enough for me =) ( I seldom print 8R )
Here are some samples.
( Most should be by the tokina, the other lens I have on me then is the 50mm minolta, which is too tight to use most of the time )
If you are getting it or trying it out, do check for focusing on your camera since it is an old lens.
Take care that focusing with an wide angle lens can be tricky if you are doing off centre, large aperture focus.
Cheers.
Note : I had not use or own other wide angles lens.