OK, I know there are a ton of Disney questions and I have read them all at least twice. I would love to be able to change my entire lens lineup but the way things have been the past year that just isn't going to happen. So, I can swing one new lens and I am having a hard time knowing what the best way to go is. My choices are as follows:
(1) Keep my 17-85IS and add a Sigma 30 f/1.4 for night time shots. The 30mm would probably come in handy at home as well now that winter is coming.
(2) Get a 17-55 f/2.8 and use that as my only lens, or perhaps pull out the 50mm f/1.8 when needed. In general I don't like the 50mm focal length so I'm not sure how useful it would be.
(3) Get the new 15-85IS and use the 50mm as above.
Any thoughts, especially from those that have been to Disney (Florida) would be most welcome. I need to travel light (carry one lens if possible during the day) because my wife and 5 year old will be with me.



