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Categories: all aviation bicycle gadgets misc motorcycle theater Mon, 26 Jul 2010After the questionable focus tests, I decided that the only real way to test was to take the lens out and use it. So, I wandered around Fremont and took pictures, being sure in each case that I was holding still, the subject wasn't moving, and the focus was locking on a reasonable thing. The end result was that at a variety of focal lengths, and a variety of subject distances, the lens focused pretty well 95% of the time. There were a few missed shots, particularly closer up. Basically, it's Good Enough. I'm disappointed that this is the result of spending $900 on a top-of-the-line lens, but I'm not sure what else to do about it. In the realistic light of day, no lens gets perfect focus every time, because the camera can't always get good focus. Obviously this one is well enough adjusted to work most of the time. So I'll keep plugging away with this one, and if it comes up obviously deficient in some other situation (such as the much lower-light environment of the theater), I'll sell it on to someone for whom it'll be the right thing, and look into other choices. In the mean time, it's nice to have my "good lens" back, and not be limited to primes (which take beautiful pictures, of course, so long as you want that specific focal length). Posted at 15:05 permanent link category: /misc Categories: all aviation gadgets misc motorcycle theater Written by Ian Johnston. Software is Blosxom. Questions? Please mail me at reaper at obairlann dot net. |