ichigosa wrote in post #10724009
Well i really want to upgrade my body as it just seems so cheap and easy compared to saving for those amazing lenses. Normally I would be more than happy with waiting on the body while i upgrade glass but after 5 years with my camera I just really want to upgrade. The 7d would make my life awesome because of the performance at high iso's, the live view, the hd video and also the wireless flash control - all things that i would love to make use of. the increase in megapixels is also nice but the functionality of the other features would open up a world of shooting oppertunities for me. I have heard that the 15 - 85mm lens is pretty good so perhaps the best idea at the moment is to get that kit. The problem is, i found a guy who gives really good prices on 7D's over here - a good couple hundred dollars cheaper, but he does not have that specific kit option :/
I have almost the exact same set-up you have lense wise, and recently purchased the 7D (3 weeks ago, but haven't been able to use it as much as i would like). I owned a 350D before this 7D, and the lenses worked very well on that body. I decided that i wanted a new body, and the 7D fit the bill (honestly, it is really nice when compared to the 350D). I don't regret upgrading the body, but after using the 7D for 3 weeks, i wish i had bought better lenses first. I now use the 17-85 IS and 70-300 IS on the 7D, and i feel that they are holding me back in some situations.
In general, both lenses are not very sharp wide open (i hardly do any pixel peeping, but general sharpness is not that good wide open). For the lenses to get nice and sharp i shoot 2 f-stops down, and for instance, for the 70-300 fully zoomed (which already is f5.6 at the focal length) it needs lots of light. If you always happen to shoot on sunny days, thats fine, but for me, it creates problems with moving subjects.
The 7D really exposes the quality of the lenses, and in my opinion I would like to upgrade my 17-85 IS to a 24-70L or 24-105L and my 70-300 IS to a 70-200L (f2.8 IS mark II, and an 1.4 extender get to 300mm, that is if i win the lottery
. Without the lottery it will probably be a 70-200 f4)
I hope this helps, and i know it is tempting to upgrade body (especially with the 7D, which in my opinion is awesome), but try and get the new lenses first, and then do the body. Ill be saving up to get some L-glass soon to get the full potential out of my 7D
Cheers, Nederlander