Thank you Chris yes it wasn' t the best example . I took some wall shots they looked terrible but on you advice i downloaded a test chart. Printing on letter paper isn't perfect maybe could have used photo paper but i've got some results set at 35mm at F2.8 to F11. They look pretty soft in the edges up to f8 i'd expect it up to f4. Is this about right for this sort of lens? Can you please see what you think thank you.
http://imageshack.us/photo/my-images/155/dsc2658h.jpg/
http://imageshack.us/photo/my-images/834/dsc2659e.jpg/
http://imageshack.us/photo/my-images/11/dsc2660m.jpg/
http://imageshack.us/photo/my-images/18/dsc2661n.jpg/
http://imageshack.us/photo/my-images/687/dsc2662h.jpg/