Archived posting to the Leica Users Group, 2006/04/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thank you Eric. Don don.dory@gmail.com On 4/17/06, Eric Korenman <faneuil@gmail.com> wrote: > > here is a link to an example. > the artist is Michael Wesely > > http://www.artnews.info/gallery.php?i=373&exi=1266 > > Eric > > > On 4/16/06, Mike Durling <durling@cox.net> wrote: > > > > Actually you have to consider the reciprocity failure of the film. > > Sensitivity gets non-linear at long exposures. > > > > Mike D > > > > Don Dory wrote: > > > Eric, > > > Exposure would be the easy part. Just for example you get a base > > reading of > > > 1 sec at the given aperture. A ten stop filter would get you to 16 > > > minutes. Stack another ten stop filter and you get about 33 > hours. At > > this > > > point minor timing changes will not have a serious effect as you would > > have > > > to double or quadruple the exposure due to reciprocity failure. > > > > > > So, I would start with a slow film, a small aperture, and your 10 stop > > > filter and bracket at 10, 20, 40, and 80 minutes. Bring a good book > or > > > another camera and enjoy the time. > > > > > > Don > > > don.dory@gmail.com > > > > > > > > > On 4/16/06, Eric Korenman <faneuil@gmail.com> wrote: > > > > > >>Can't remember his name. Wish I could provide a link to images. > > >>I thought about stacking filters and a pinhole too, but how to even > > begin > > >>to > > >>roughly calculate the exposure time?! Any gear heads out there to run > > the > > >>math? > > >> > > >>Darkest filter I've got is a 10 stop filter. > > >> > > >>Eric > > >> > > >> > > >>On 4/16/06, Don Dory <don.dory@gmail.com> wrote: > > >> > > >>>Eric, > > >>>So, where do I see the images? At the last LUGfest in NYC now more > > than > > >> > > >>a > > >> > > >>>few years ago I saw the camera that he was using at MOMA and always > > >> > > >>wanted > > >> > > >>>to see the results. > > >>> > > >>>My guess would be a large format film with a very dark ND filter and > a > > >>>near > > >>>pinhole aperture. I think that you could stack several ND filters as > > >> > > >>the > > >> > > >>>effect would be a geometric series. F256 on a 50 ISO film with a > sixty > > > > >>>stop > > >>>effective filter would get you into a pretty long exposure. Figure > out > > >> > > >>an > > >> > > >>>extreme compensating developer and Pat's the bunny. > > >>> > > >>>Don > > >>>don.dory@gmail.com > > >>> > > >>> > > >>>On 4/16/06, Eric Korenman <faneuil@gmail.com > wrote: > > >>> > > >>>>There is a photographer out there who works in u-l-t-r-a long > > >> > > >>exposures. > > >> > > >>>I > > >>> > > >>>>mean on the order of months to years. > > >>>>He documented the building of the new MOMA in NYC. > > >>>>They are quite amazing images. > > >>>> > > >>>>In short - HOW do you do that? > > >>>>IE How do I do that?? > > >>>> > > >>>>Eric > > >>>> > > >>>>_______________________________________________ > > >>>>Leica Users Group. > > >>>>See http://leica-users.org/mailman/listinfo/lug for more information > > >>>> > > >>> > > >>>_______________________________________________ > > >>>Leica Users Group. > > >>>See http://leica-users.org/mailman/listinfo/lug for more information > > >>> > > >> > > >>_______________________________________________ > > >>Leica Users Group. > > >>See http://leica-users.org/mailman/listinfo/lug for more information > > >> > > > > > > > > > _______________________________________________ > > > Leica Users Group. > > > See http://leica-users.org/mailman/listinfo/lug for more information > > > > > > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >