I currently have a Canon XTI and want to upgrade. I am debating between the 3Ti and the 4TI. I have read numerous conflicting information regarding the 4Ti. I realize the 4Ti is much better for video but that doesn't concern me. My primary use wil be photos. I take lots of family photos indoor in low light settings. What is important to me is there a difference with the 4TI in the low light settings? Also I think the touch screen sounds very appealing and easier for the beginner photographer like myself. Some reviews indicate there is no difference between the 3t and the 4t in lower light and others indicate the 4T is better. I live ina rural area, no camera stores in the area so its not possible to go to a local store and check out the cameras and lenses so all my research is done online.
As far as a lens, I am looking for a walk around lens that is also good in low light. I currently have the 50mm 1.4 and the 18-135 is. I am not crazy about the 18-135 and will probably be selling it soon. The 50 mm is a great lens but sometimes
it is not wide enough for photos. So I have it down to the Canon 17-55, 15-85 or 24-105L. Any suggestions would be appreciated.
HAVE YOU TRIED A 28MM 1.4 OR 35MM 1.4 A 35MM MAKES A GOOD WALK AROUND LENS FOR THOSE CLOSE INDOOR SHOTS. I THINK YOU COULD FIND A COMBINATION LENS LIKE A 28 TO 35 OR SOMETHING LIKE IT IF YOU LOOK HARD. I FOUND IN MY OWN PHOTO LIFE THAT A 35MM WORKED IN TRAVEL IF I TOOK MOST OF THE PICTURES IN DOORS. A LOT OF INDOOR PLACES YOU ENTER IN TRAVEL WILL NOT ALLOW FLASH..
You mention indoor shooting and dim light. I would reccomend the EF-S 17-55 f/2.8. It is not cheap, but it should tick all your boxes. It would be your primary "walk-around" lens, so it is worth it to spend a few hundred extra for that. You really do need the constant f/2.8 aperature (at least!) for your low-light work. Also, on a crop body, that 17mm width is very very nice compared to something like the 24-105.
Unless you think you might go full frame ($$$$$) in the next few years, I would go with the 17-55. Mine is very sharp on my T3i, and very convenient. I seldom go over to the prime lens unless I am really wanting to do a portrait with heavily-blurred bokeh background.