Hi All,
I am getting ready to purchase a lens and need some help from more experienced photographers. I shoot primarily travel photography with a mix of landscapes, architecture, building interiors and museums. In the past I traveled with a Canon G for portability reasons but of late, I have been disappointed with the photos and would like to take my 20D on my next trip. I am looking for a good all-around lens. I currently have a Tamron 17-50 f/2.8 that I have been using but would like something with a little more reach. I have looked at both the Canon 24-70 2.8L and the 24-105 4L. Because I shoot some building and museum interiors in relatively dim light hand-held, I am concerned about how the 24-105 will perform. My logic may be off but I would think that even though the lens is slower than the 24-70, with the combination of IS, which should get me 2 to 3 stops, and a higher ISO, I should be able to use a slower shutter speed and get enough light to make the shots. I don't shoot moving objects in low light so subject movement wouldn't be an issue. If the 24-105 wouldn't work well enough, I don't know that the 24-70 is going to get me too much more than my current lens especially considering the cost. I've also read quite a few reviews on the Canon 28-105 f/3.5-4.5 which seems like a good low cost alternative but I would prefer not to lose on the wide end (even though I have the 17-50) and I am willing to invest more if it will get me a lens with crisper image details and better contrast and color. Thanks for you help.