Prehaps u want to consider this, buying of lense is not really about covering ranges, it is more about what u need.
Do u need the addition range form 55-105 that the 24-105 gives u? Are u willing to give up the 18-24mm range that the 24-105 does not give? If you are, prehaps the 24-105 is good for you bearing in mind that this lens will be what u have mounted most of the time.
If you really want to make full use of ambient light, than a f2.8 lens will be alot more useful. You may be shooting f11-f16 at night, but wait till you can shoot at f2.8 handheld and still yield decent pic, things may change. Of course, it depends on your shooting style again, what DOF are you looking for.
If you are comfortable with your kit lens and do not need additional range, the 17-55 f2.8 is a good lens to consider....... really...... It is slightly cheaper than the 24-105, image qlty is, as some will say, the same....... and it is lighter. You can also buy a EX580II to go with it. It focus as fast as the L lenses
If you want the f2.8, dont mind losing 17-24 but gaining a little more reach, dont mind the weight, than the 24-70 is the lens to choose.
For me, i would choose the 24-105L+580II as I like the additional 70-105mm reach that it gives me. I used to have the 18-55 and 28-105. The 28-105 stays on my camera 75% of the time. the 18-55, less than 10%. When I went about looking for a "better" lens, I bought the 24-105. It was what I "needed"
Do u need the addition range form 55-105 that the 24-105 gives u? Are u willing to give up the 18-24mm range that the 24-105 does not give? If you are, prehaps the 24-105 is good for you bearing in mind that this lens will be what u have mounted most of the time.
If you really want to make full use of ambient light, than a f2.8 lens will be alot more useful. You may be shooting f11-f16 at night, but wait till you can shoot at f2.8 handheld and still yield decent pic, things may change. Of course, it depends on your shooting style again, what DOF are you looking for.
If you are comfortable with your kit lens and do not need additional range, the 17-55 f2.8 is a good lens to consider....... really...... It is slightly cheaper than the 24-105, image qlty is, as some will say, the same....... and it is lighter. You can also buy a EX580II to go with it. It focus as fast as the L lenses
If you want the f2.8, dont mind losing 17-24 but gaining a little more reach, dont mind the weight, than the 24-70 is the lens to choose.
For me, i would choose the 24-105L+580II as I like the additional 70-105mm reach that it gives me. I used to have the 18-55 and 28-105. The 28-105 stays on my camera 75% of the time. the 18-55, less than 10%. When I went about looking for a "better" lens, I bought the 24-105. It was what I "needed"