Guy et. al.! All the best for your very ambitious pinhole hotel project! Eager to see the images on web.
-Achal ----- Original Message ----- From: "Guy Glorieux" <guy.glori...@sympatico.ca> To: "pinhole List" <pinhole-discussion@p at ???????> Sent: Wednesday, April 17, 2002 4:44 AM Subject: [pinhole-discussion] The Wyndham Montreal Hotel Giant Pinhole Camera Project > Hi all, > > For those that are interested, I'll be turning a hotel room in Montreal > into a giant pinhole camera on April 28. Details of the project can be > found at the following URL (Zernike has offerd to build and host the web > site which is still in progress): > http://www.zeroimage.com/Guy/PinholeHotel.html > > We will be a team of four photographers. The room will be on the 6th > floor, kindly offered by Wyndham Montreal Hotel, for the period from > saturday noon to monday noon. This will give us lots of time to do the > set-up ahead of time. > > The image will be printed on Ilford RC VC paper, with a yellow filter on > the pinhole. We'll be working with 3 strips of 50 in. x 9 feet from a > roll of 100 feet. The pinhole should be about 0.1'' diameter with a > focal length of 10 feet. This works out an f-stop of F-1200. With a > yellow filter and paper at ISO 3, this should work out to an exposure > time of about 1.5 hrs on a sunny day. > > There are no reciprocity failure charts for paper, but it is just as > real as for film. So I'll have to make some tests before next week but > I expect to end up with an exposure time of maybe 8-12 hrs. I just hope > that it'll be sunny weather outside. If it's rainny, we can either move > the paper closer to the window and shorten the focal length to open up > the F-stop or work with a larger pinhole diameter and get a somewhat > more blurry image. > > The plan is to calculate the focal length/F-stop based on the weather > outside so as to be able to open the shutter at 00:00hr on Sunday April > 28 and to let the exposure run until 24:00hr. > > We'll be using RC paper and, once we have the paper negatives, we'll > make a 4' x 8' contact print from each of the three 50'' x 9'. (You > soak the paper negative and the unexposed paper positive, squeegee them > together and do you exposure). I have not yet got around to making > tests but I do not see any major difficulties here, assuming that I > managed to get through the first stage of processing the paper negative. > We'll be using wallpaper tanks to roll and unroll the paper in the > chemistry. Washing and drying will be the tough parts. > > The final paper negative and positive (3 each) will be mounted on thick > board to make a twin triptych - either all 3 positive and all 3 negative > or alternating 1 positive and 1 negative. > > Cheers, > > Guy > > > _______________________________________________ > Post to the list as PLAIN TEXT only - no HTML > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??????? > unsubscribe or change your account at > http://www.???????/discussion/
