Yes Lester-I have the Canon 10-22 mm lens,I am happy with it for astro wide field,Its also quite handy for everyday use and landscape photography.
I did photograph a antique motor vehicle once with this lens,and was very pleasantly surprised how sharp the images came out with no PP.
Here is a wide field astro image with the lens
http://www.iceinspace.com.au/forum/a...e.php?a=106355
My demands for astro work are less demanding the others here,so was pleased the the lens for that application.I will try and post a image at 10 mm of the Love joy comet I took the other day.
If you want to borrow it Lester,you are welcome,Mike borrowed it for the astro camp excursion.I rarely use the lens,but its always handy to have in the bag.
Cheers Chris