On Fri, Jul 10, 2009 at 12:29:15PM -0400, John Francis scripsit: > On Thu, Jul 09, 2009 at 09:58:36PM -0400, Graydon wrote: > > On Thu, Jul 09, 2009 at 06:27:13PM +0200, AlunFoto scripsit: > > > 2009/7/9 Graydon <[email protected]>: > > > > My take on this is that the 50-135 is the people range and the 60-250 is > > > > the zoo range. ?(Actual wildlife would be the 200-500 Pentax has > > > > inexplicably failed to announce. :) > > > > > > So a man photographing chimps in a zoo would need 60-250, while the > > > zoo-resident chimp photographing people would need the 50-135. > > > > Only if the chimp got to wander freely with the people. Otherwise, the > > situation is symmetric. > > Only if chimps are the same size as people. Otherwise you need a longer > focal length to fill the same portion of the frame with a smaller body > (since the distance between subject and photographer remains the same).
To a first approximation, chimps are the same size as people. (Shorter, but longer arms and more likely to gesticulate broadly. :) -- Graydon -- 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.
