Well it's standard industry practice nowadays to allow I think it's ?12% to the indicated focal length. Round down on wide angulars (18.8? pfah, that's 18mm not 19!), round way up on telephotos (450mm? that's the same as 500). About the only the thing PopPhoto's reviews are any good for is that they always test the true focal length and transmittance of lenses (f-stop, t-stop, herp derp what are difference? let's just call it f-stops)
The Postman payed a visit yesterday, got my Promasteramron 17-50. I could order a Tamron zoom grip and sticker for like $30, but that kind of negates my meagre savings in the first place :lol: Minty fresh, only signs of use are a blotch on the zoom grip and the obvious mount scratches from, well, having been mounted. AF switch is in a retarded place, it's almost under the popup flash, AF's a bit noisier than I expected (bzzzz) but quick. Family photo! And the 300D really isn't that much smaller than the 7D, it's just a bit further back and looks a bit smaller because of that, also grip (just put it on for the photo, I don't plan on ever using it, it was a freebie).
https://pic.armedcats.net/r/ra/ramseus/2010/12/30/1.jpg
https://pic.armedcats.net/r/ra/ramseus/2010/12/30/2.jpg
Still haven't really used my now IR 300D, only good it'll do in winter is astro and we haven't had a good clear night for a while now.