Did you create this thread to reaffirm your decision on the Canon 17-55 IS (which is a cracking lens no doubt), or did you want actual feedback that you would consider? My money is on the former.I just don't see many people with this lens.
I thought that the range is so narrow I could just move my position.
It's not like the 17-55mm which basically spans 3 lenses and has is
I guess the benefit isn't so much the light benefit but the shallow dof
I have a question though, have you shot indoor portraits of people before? If you have then they are not much different to pets apart from you won't be needing a huge space to do a full length shot and you can get away with using a 10-22mm as the distortion can be fun. Otherwise pick a moderate zoom 17-55 or 24-70 and be done with it as you won't have the versatility otherwise. Yes you lose the quality of the bokeh but honestly 99% of people won't care because they aren't pixel peepers they are pet owners who probably love their animals.