FlipsidE wrote in post #4969060
While it is a tad on the slow side, whatcha think of the EF-S 10-22 for these projects?
The EF-S 10-22 is a great ultra-wide angle lens for the crop series of cameras, and with wide angles you have more flexibility with depth of field so that you can use the wider aperture settings for higher shutter speed, but the downside of this lens is the ultra part of the description. This lens is great for a very wide look -- like I said earlier, getting a very wide angle shot of the whole pool -- and, in fact, may work much better for that one perspecive than a "normal" wide angle (starting in the 17mm range). So, for those one or two "whole scene" shots, this lens would be great, but when you want something more close and personal, you just have to have a bigger arsenal.
You haven't mentioned a budget, and in these discussions, you don't ever hear "I'm a billionaire with an unlimited budget to spend, so tell me the absolute best setup and I'll buy it tomorrow!".
So, I would say that a great collection would be the 10-22, the 17-55 f/2.8, the 24-70 f/2.8, the 85 f/1.8 and the 70-200 f/2.8. Each of these lenses could play a great part in your scenario. But, most people would probably stick with two or three lenses -- maybe the 10-22, the 17-55 and the 70-200, but then you'd be missing out on the 85, which is a great close-up action lens, and the 24-70, which is a great mid-range lens. Choose your budget, make up your priorities according to what scenes you really want to capture, maybe rent a lens you're not sure of if the income will be there to cover the expenses. Maybe take a couple of days to visit this pool or similar pools to get a feel of what works the best!