Hey there, everyone!
Last weekend, I made the world's stupidest mistake and put my gear bag with everything I had in my car before a big assignment, and it was all stolen. I lost my 5Dc, 40D, 17-40, 24-70, 50 1.4 and Sigma 70-200. Took a few days for the nausea to go away.
Anyway, I've replaced my 5Dc and 17-40, and I picked up a 70-200L f/4 non-is, but I'm stuck on the 24-70 issue. I could probably swing a used copy of the 24-70, but I'm considering the Sigma 24-70 2.8 and the 24-105L as possible alternatives.
The Sigma 24-70 is attractive because it's a few hundred dollars cheaper, and the 24-105 is attractive for the extra reach, which could come in handy as a travel lens.
My main concern is AF. I despise slow, loud focusing. Anyone have experience on how these compare in terms of auto-focus?