All shot with a 20D, JPG Large, no in-camera sharpening, sharpened
with Intellisharpen at settings 15 to 20. ( I didn't realize that I had the ISO set at 800 for some of these pics- I don't like to go over 400 unless I absolutely have to )
12mm, f13, cropped by approx 20% vertically only, ISO 200.
This lens is a winner. The construction and fit and finish seems on
a par with my 70-200 f4 L. Almost no perceptible real life CA,
fast and accurate focusing, very sharp.
the 20d is an APS-C sized sensor and a 1.6 crop. The nikon D70 is a 1.5.
Incidentally, the sigma lens does "fit" on a ff body. but the image circle is designed for an APS-C sensor, so you get something that looks like serious tunnel vision where only the center APS-C-sized square of the sensor gets any light. I think to get wider than about 16mm on a FF camera you have to go fish.
I just got my Tokina 12-24 and the preliminary results are very good. I shoot interiors of houses and weddings. Wow ....what a nice wide angle field of view!!!
