Shel Belinkoff <[EMAIL PROTECTED]> wrote: > So, here's a panorama challenge: make something different
Night panoramas taken with rotary cameras offer an interesting aspect in that, unlike most other photography, they capture rather long time spans. Let me explain: Due to its working principle, a rotary camera like a Noblex can't do, say, one minute of exposure at once. It can, however do multiple exposures. The longest time my Noblex 150 offers is 1/15th of a second. To get a full second of exposure time, I have to let it run for 15 revolutions of 1/15 sec each, every single revolution taking about 5 secs during which the slot through which the film is exposed, has moved across the frame so that each part of the frame has been exposed for 1/15 sec. As an approximation, one can say that 1 second of exposure takes about 1 minute of camera operation, 1 minute of exposure takes an hour of rotation etc. The following two pictures with an effective exposure of 90 secs contain a full 90 minutes of time each. Started just after sunset and finished long after the sky was completely dark. 90 minutes of cars driving along, people walking by and including such relatively short events as two minutes of a bright glow when liquid slag was dumped next to the steel mill and very effectfully lighting the smoke above on the left. http://www.fotoralf.de/temp/0500101.jpg and http://www.fotoralf.de/temp/0520005.jpg BTW, few people are aware that cameras with focal plane shutters capture a time frame as long as the flash sync time at all shorter settings because, just like with the rotating panoramic camera, the slot formed by the shutter curtains takes about the sync time to travel along the whole length of the frame. Not that it matters much in modern cameras, but it certainly did when Lartigue took his famous photo of a racing car, around 1910. Second line, left picture, at... http://monsieurphoto.free.fr/index.php?menu=1&Id=44&ss_menu=1 Hope I haven't bored you too much. Ralf -- Ralf R. Radermacher - DL9KCG - Köln/Cologne, Germany private homepage: http://www.fotoralf.de manual cameras and photo galleries - updated Jan. 10, 2005 Contarex - Kiev 60 - Horizon 202 - P6 mount lenses
