From what I've found, the 18-270 is a fantastic walkaround lens, and will seldom leave your camera due to the immense zoom range, but it is a wee bit too much of a Jack-of-all-trades, and quality suffers at the extreme wide & zoom ends. If clarity of image and robustness of build are paramount, it may not be the best choice... IMO!
That said, I find mine invaluable as an all-rounder, and most results are perfectly satisfactory. You will however have to put up with noisy, slow AF, a rather loose manual focus ring, and a zoom ring that suffers from gravity/inclination drag at times.
Last edited by Takahashi; 11-01-11 at 20:54.
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