gradient, I have taken care of the dust bunnies in the cam...all happened apparently when putting on the lens. I saw that but did not want to correct these images any more for posting.

The distortion was slightly apparent in the  first test (brick wall) but not in shots like this.  As far as I am concerned, if good enough not to notice it is not serious and is simply not noticed. Does that make sense?  Thoughts like yours are the very reason I posted the shots...even with the dust bunnies! Yikes.              Thanks.       TomDart.