On Jan 24, 2011, at 3:56 PM, DagT wrote: > Den 24. jan. 2011 kl. 21.30 skrev Paul Stenquist: > >> On Jan 24, 2011, at 3:00 PM, steve harley wrote: >> >>> On 2011-01-23 15:51 , Paul Stenquist wrote: >>>> PhotoShop controls do the same thing the shift and tilt lenses do -- they >>>> rearrange reality. >>> >>> that's the "same thing" in the sense that bird eggs and kangaroo pouches >>> are the same thing; i'm not a purist nor very interested in tilt/shift, but >>> i do know Photoshop can't vary the focus distance according to position on >>> the sensor, it can simulate out-of-focus, but it can't _simulate_ in-focus >> >> No. The two technologies aren't as disparate as a kangaroo pouch and an egg. >> A better analogy would be driving two different routes -- one scenic and one >> fast -- to get to the same place. Or traveling to the same place by car >> rather than bicycle -- one being more pure, the other more efficient. >> >> Yes, it's true you can't bring objects into focus with PhotoShop – at least >> not to any great extent. But using tilt for DOF is really only a factor in >> large format photography, where DOF is extremely limited. With a 16 x 24 >> sensor, extensive DOF is easy to achieve. Tilt would be relatively useless >> in this case, except perhaps for macro photograph. And even in that case, >> the entire camera can usually be tilted to achieve matching focus. >> >> There's a reason why no one is producing new tilt/shift lenses for DSLR >> cameras. >> >> Paul > > Like this? > http://www.hartblei.com/lenses/lens_35mm.htm
Like that -- a one off from a fringe player. > > DagT > http://www.thrane.name > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
