Shelley, Pinhole photography is in technical aspects not different than glass lens photography. Focal length, aperture (not aperture size), exposure, angle of view, light fall off at the edges of film, reciprocity corrections, etc., are all concepts that function the same whether the lens is a pinhole or a glass lens. Based on the above, it makes sense that the program have you doing pinhole in 102 rather than in 101 as the latter course (hopefully) included all of those concepts.
If you do a google search you are going to find several sites that have tables with needle sizes and their diameters, George Smith's being one of them http://mywebpages.comcast.net/hmpi/Pinhole/Articles/Aperture/pin_aper.htm , but if I were you and had access to a flat bed scanner, I would use it to measure its actual size. This small article I wrote tells you how to achieve that: http://members.rogers.com/penate/diameter.htm Guillermo ----- Original Message ----- From: "Rauch, Shelley" <ra...@yorkcounty.gov> Things not discussed: focal length, aperture size, exposure. I've glossed about on the internet and read some good articles on all of these. I'm currently trying to figure out what my aperture size is. I used, the teacher thinks, a #10 sewing needle to create the hole. Is there an 'average' size for this sort of needle? I'm going to be experimenting tomorrow morning, but the darkroom will only be open for a few hours tomorrow afternoon, then closed again until Tuesday. I'd like to avoid wasting paper. Any advice about my aperture, exposures, or.... anything I'm not thinking to ask? Thanks... from a very frustrated student... Shelley C. Rauch Acquisitions Dept. (757)890-5116 Tabb-York County Public Library 100 Long Green Blvd. Yorktown, VA 23693-4138 _______________________________________________ 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/
