I like those, especially the third. There's no chance of residual radiation on that thing is there?
On Sun, Feb 24, 2013 at 11:25 AM, Jostein Øksne <[email protected]> wrote: > http://www.alunfoto.no/temp/heligontest/index.html > > I have purchased an old optic from an X-ray machine, a Rodenstock 100mm > f/1.6. > > First I tried it on the 645D, just holding it before the bayonet to see if > there was any vignetting. There wasn't! So the image circle is quite decent. > The image of the rotten plant is shot with this combo. I think the OOF > rendering is quite interesting and look forward to play more with this > setup. > > Then I scavenged an old and broken Pentax-A 50mm f/1.7. I picked out all the > optical elements and mounted the Rodenstock into the focusing helicoid using > generous amounts of gaffatape. The other two images are produced with this > setup. The "jesus-light" image at f/2.8, the daisies at f/8. > > To have the iris behind all the optical elements like this is probably all > wrong from a theoretical perspective, and the true size of the aperture is > probably not as advertised. Yet I must say I like the results. > > As the "jesus-light" image shows, the lens comes with an odd compliment of > internal reflections. I believe it can be used to good effect on occasion. > > Cheers, > Jostein > > -- > 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. -- -bmw -- 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.
