On May 19, 2013, at 16:50 , Darren Addy wrote: > I should also mention another significant negative... when you lose > the crop factor you lose at the telephoto end. So your 500mm lens goes > back to being a 500mm FOV instead of a 750mm FOV... meaning you will > have to buy longer lenses to make up for what you lost (or keep your > APS-C camera for just such a reason).
Or buy a Q body for 2750 mm lens when you really have to reach. At that power, you really get into atmospherics anomalies, plus lens design flaws that show up when you are only using the very center of the field of view of a given 35mm lens. Sure is fun to try though! Joseph McAllister Too much gear, not much time -- 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.

