On Thu, Jun 23, 2011 at 3:45 PM, Darren Addy <[email protected]> wrote: > On Thu, Jun 23, 2011 at 11:54 AM, John Sessoms <[email protected]> wrote: >> I don't see how "crop factor" is even relevant in a camera that doesn't use >> K-mount lenses. > > This comment confuses me. Crop factor is relevant because most people > don't think in Field of View. They think in 35mm camera focal length > equivalents. > Pentax obviously thinks it is relevant, which is why their Q lenses > have both the actual focal length printed on the front and also the > 35mm camera focal length equivalent (which is the focal length of the > lens multipled by the crop factor).
If you can't mount a 35mm-format lens on the thing, knowing the crop factor per se isn't that useful. As you say, the lenses are marked with the 35mm-equivalent focal lengths, which is more useful. (By comparison: If you own a random digicam, do you know its "crop factor"? Or just its 35mm-equivalent focal length range?) What I found confusing about your previous comment was the "hope you don't like wide angle" part. If you're not maintaining backwards compatibility with a previous mount (with a fixed registration distance) there's nothing hard about making wide-angle lenses. Especially on a camera with no mirror box at all. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
