Yeah, those pics are amazeballs
On Mon, May 2, 2016 at 9:29 AM, Ken Waller <kwal...@peoplepc.com> wrote: > > The dragon fly is exquisite Mark! > > -----Original Message----- >>From: Mark C <pdml-m...@charter.net> >>Subject: Re: OOF rendering in focus stacks >> >>Collin - >> >>I'm not familiar with the lenses you reference or implications for lens >>design, but the sudden transition from in focus to out of focus that you >>get when focus stacking can be used to manipulate the bokeh. For >>example, I did not need ot stack this shot but did to put the background >>of out of focus, and only stacked the images needed to get the dragonfly >>in focus: >> >>http://www.markcassino.com/b2evolution/media/blogs/calarti/2014/IMGP1396-1409_L.jpg >> >>The abrupt transition is obvious in the blade of grass just to the left >>of the dragonfly's abdomen, near the bottom of the image. With some >>selective layering or cloning from one image to another that could have >>been easily addressed. >> >>A couple other samples and comments about the images and stacking >>technique are here: >> >>http://www.markcassino.com/b2evolution/index.php/stack-focused-dragonflies >> >>Mark >> >>On 4/29/2016 7:50 AM, Collin B wrote: >>> This has me curious. Can we use this technology to emulate a variety of lens >>> designs? >>> Take, for instance the old Pentax-A 70-210/4 vs the Takumar-A 70-200. The >>> Tak-A has a much shorter transition from in-focus to out-of-focus. >>> Might one also use stacking with a mirror lens to eliminate the doughnut >>> bokeh? >>> Perhaps through stacking someone might emulate the unique character of a >>> Petzval or a Protar. They certainly can't be done in a single layer. >>> Will be interesting to see what the future holds. An engineer might use >>> such technology with appropriate (mathematical) filters to predict lens >>> design behavior without ever building it. Like an optical add-in for catia. >>> >>> Collin > > > > -- > 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. -- -- Reduce your Government Footprint -- 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.
