So I'm kindof at a crossroads. I'm concentrating on shooting architectural shots almost exclusively. I've had my Tamron 10-24mm for over a year now. I had a high profile building shoot coming up, so out of curiosity, I traded a friend my tammy lens for their Canon 10-22 to see if it was any sharper. I felt like it was a good deal sharper.
I shoot with a 50D, and for my architectural shooting, I primarily use my wide angle, be it the 10-24 tammy, TS-E 24mm L or 50 f/1.8. The wide angle gets probably 75% of the shot time, so I need it to be the sharpest in the lot.
Here's the dilemma: 1) Do I sell off the Tamron, buy the 10-22 Canon OR 2) do I get a Sigma 8-16mm, or do I 3) Wait until when I'm able to upgrade to a 5D mk2 and get a 16-35 or 17-40? Going as WIDE as possible is my objective, but I fear the distortion, even with post processing corrective measures. My last shoot has been very lucrative, so I'm almost in a position to get to any of those options. I plan on shooting professionally and more seriously from here on out.
These were with the 10-22:
Open to options...