The list author says: "For how I work (typically shooting in low-light situations - i.e. churches and hotels or reception sites), this list includes some gear that I feel I simply cannot do without."
"My fast, ultra-wide. Used for unique getting-ready photos, wide shots of ceremony showcasing the venue, some formals, and crazy reception party shots. People will get drunk. It makes this lens even cooler."
"I own both the 50 1.4 and the 1.2, and while I do mostly use the 1.2 (because I already own it), for the price difference, the 1.4 is more than sufficient."
"I own the first generation of this lens and firmly believe that something this long is required for most ceremonies, and if you want to make sure you can use it in almost any situation, go ahead and get the 2.8 IS... Otherwise you'll spend the money on a lesser lens and realize you need both the extra stops in aperture and the ability to drop your shutter speed with the IS."
"If you're shooting weddings, you need an external flash for the getting ready and reception shots. Compared to the 480EX II (which I have owned and subsequently sold), this is far superior. I own 4 of them; two for my 2 shooting bodies, and two to put on stands and cross light for dark receptions where I can't bounce. Which leads me to..."
"You need this. Personally, I think Adobe is screwing themselves out of $550 for making a product so awesome that it makes CS 537 (or whatever version they're up to now) unnecessary."