I am looking for a new walka round lense. I currently use the Sigma 24 - 70 Ex and even though this is a good lense, I find it quite often hasn't got enough reach.
So does it make sanse to dop the F2.8 to F2.4 to gain the extra reach???
If you need f2.8, then there's no substitute, but I love my 24-105. It's so versatile. In fact I thought I might miss the extra reach I had with 28-135, but I haven't.