Sort of a sliding DoF then.(?) SR might need to be beefed up and serious dampening necessary to counter what might be impractically rough on the aperture mechanism. Maybe only "Bulb" shots. ;)
Jack --- On Fri, 4/23/10, Bob W <[email protected]> wrote: > From: Bob W <[email protected]> > Subject: RE: PESO: Duel Daisy > To: "'Pentax-Discuss Mail List'" <[email protected]> > Date: Friday, April 23, 2010, 11:37 AM > > > > This is a rough attempt to duplicate a trick I'd read > about > > some years ago. > > Done with a two-shot multiple exposure. All sorts of > > in-and-out of focus and mm lens setting could, of > course, be tried. > > May get serious and try it again when I'm completely > out of > > something to do. > > > > Jack > > > > Comments? > > > > http://photolightimages.com/aspupload/detail.asp?ID=491 > > > > This reminds me of an idle thought I had on my way to work > this morning. I > can't think of a good non-technical reason why the aperture > should remain > the same size during exposure. It should be possible in > this computerised > day and age to set the camera so that the aperture starts > at say f/2.8 and > stops at say f/11 during the exposure, not necessarily > changing at a linear > rate. Of course, the computer would have to calculate the > exposure time > accordingly, but it could have an interesting effect on the > areas outside > the critical plane of focus. > > Whether the investment required to develop it is worth it > is a different > matter, of course. > > B > > > -- > 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. > -- 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.
