I found it difficult to properly guess, or meter the exposure time on Sunday at my workshop. By 2:30 when our cameras were ready it had stopped raining but was still cloudy. The sun kept poking through the clouds. I use a chart of lighting conditions. It wasn't heavy overcast anymore but was it cloudy bright or diffuse sunlight? Half of my class had good prints the first try. By the third go around everyone found a working method for their own cameras. If your problem was't light leaks then I would probably say it was angled too close to the sun or that the lighting changed during the course of the exposure to make them overexposed. Too bad you didn't have access to a space to develop and try again.
>===== Original Message From George L Smyth <[email protected]> ===== >--- Patrick Barrett <[email protected]> wrote: >> Here is the root of the question: All the negatives were black! I assume >> that we drastically over-exposed the paper. I do not think that it was >> fogged, but I suppose it is possible. The cameras were not light-leaky. > >Is there an image? If so, then chances are that this was the case of massive >over-exposure. However, I would go back and test the camera for a light leak, >as this is more probable. Please film in the camera and set it outside for an >hour. If you get anything after developing the film then you've got a light >leak. > >One problem that I ran across was fogging due to the sun coming directly in >through the pinhole. My exposure time on Sunday was about 15 minutes, and this >gave the sun an opportunity at one point to move into a position where is came >directly into the hole. This only happened on one shot and the result was more >fog than an actual turning of the negative to black, but it's worth a >consideration. > >Cheers - > >george > >===== >Handmade Photographic Images >http://GLSmyth.com >DRiP Investing >http://DRiPInvesting.org > >__________________________________________________ >Do You Yahoo!? >Yahoo! Health - your guide to health and wellness >http://health.yahoo.com > >_______________________________________________ >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/ Chris Peregoy [email protected] http://userpages.umbc.edu/~peregoy
