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Forum: Pentax SLR Lens Discussion
11-05-2017, 10:33 AM
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Quite usable. The only disadvantage is on APS-C you don't get any wide angle, since 28mm comes out as a semi-wide normal. The DA 28-105mm is a fine-performing lens, but I wish Pentax would upgrade their old film-based FA 24-90mm lens which would still provide more useful wide angle on APS-C for those of us who use both that and FF or film.
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Forum: Pentax SLR Lens Discussion
11-05-2017, 09:21 AM
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From what I've seen, tests, users, etc. my impression is that a FF lens is more likely to turn in lower vignetting and distortion overall than lenses cut just for APS-C, because the edges of the FF glass are out of the picture. Of course, then there's usually more size and weight involved, but sometimes this is offset as still the best choice, because of the flexibility of being usable on APS-C and both 35mm film and FF digital bodies.
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