« on: April 19, 2011, 10:08:38 PM »
One of mine
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Interestingly, no one has suggested 3rd party lenses. I haven't used one, but reportedly the Tamron 17-50mm f/2.8 non-VC is an excellent lens (optically better than the VC version). AF is supposedly loud and a bit slow, but it's otherwise a great value - fast aperture (for a zoom), good general purpose focal length on a crop body, and the price is right...
I choose good filters and see what they're like, if I can tell they're giving me the same (or as close as possible to) IQ as without filter, then I sell them and buy a more expensive one, but I don't get a 150 dollar filter (and yes they cost that here in Norway) just because it's expensive, if I can't see the difference between a 30 dollar and 120 dollar filter, I don't buy the 120 dollar one, isn't that pretty obvious?
IMO, the EF-S 17-55mm f/2.8 IS USM lens is the ideal general purpose zoom for a crop body like the 7D, and it focuses very fast.
The EF-S lens that has had some full frame users jealous for a while.
Not the educated ones, who would know that the EF-S 17-55mm f/2.8 IS on a crop body is out-spec'd by the EF 24-105mm f/4L IS used on FF, since the FF-equivalent of 17-55mm f/2.8 is 27-88mm f/4.5 (becuase the crop factor affects aperture in terms of DoF for equivalent framing), and the 1-stop effect on shutter speed is more than compensated for bu the 1.33-stop improvement in ISO noise with the additional light gathering ability of a FF sensor). So, the 24-105 on FF is wider, longer, and faster than the 17-55mm on crop, still has IS, and is weather-sealed with L-quality build to match.
if you are looking at a 40D, why not look for a 5D classic as a option, used goes for 900-100 depends where you are. but AF is pretty much the same as Rebels.
I have the 28mm 1.8 Canon.