Roger Eichhorn <eichhorn@xxxxxx> writes: > The only benefit it could have is that it saves you from having to > crop a full frame 35 mm image to achieve the same result you would > have with the digital image. (If that small step is a benefit.) I > wasn't speaking of "mechanical length," which depends on specific > optical design issues. My only position is that the 1.6 multiplier > effect is not a benefit. It doesn't convert a 50 mm lens into an 80 > mm lens. And yet, standing at suitable portrait distances from a subject, I get nice headshots with my 58mm f1.2 NOCT, almost as if it were about 87mm instead of 58mm. If I had a 6MP full-frame sensor, I couldn't use that lens that way; I'd have to use something like the 105mm f2.5 (too long and too slow IMHO). Certainly the results are the same as taking the central 6MP from a higher-resolution full-frame sensor of just the right resolution that the central area corresponding to my current sensor help 6MP on the bigger sensor. And when I can choose between the bigger full-frame sensor and the 6MP 1.5x crop factor sensor *at the same price*, I know which one would be more useful. Until then, I rather like the 1.5x crop factor, overall (one investment in a 12-24mm lens got me back to the same wide end I'd had before on film, only half a stop slower). -- David Dyer-Bennet, <mailto:dd-b@xxxxxxxx>, <http://www.dd-b.net/dd-b/> RKBA: <http://noguns-nomoney.com/> <http://www.dd-b.net/carry/> Pics: <http://dd-b.lighthunters.net/> <http://www.dd-b.net/dd-b/SnapshotAlbum/> Dragaera/Steven Brust: <http://dragaera.info/>
