Archived posting to the Leica Users Group, 2006/04/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Bookmarked! :-) Op 17-apr-06, om 14:34 heeft Eric Korenman het volgende geschreven: > 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 >