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Contact print frame, finished !
I finished my contact print frame today after simplifying it again. Here’s the final result:
I decided to keep the frame itself in the state that it was in after the previous blog post. On the long sides, the glass is supported by a wooden ridge of about 2cm. This is enough so I didn’t need to add more wood on the front to also support the glass along the short edges. Here’s a close-up of how it is intended to be used:
The principle is of course very simple. Light hits the frame, passes through the glass, is filtered by the subject and hits the photo paper. Because light changes stuff, the parts where the light can pass through the subject are exposed and something happens. The other parts stay unexposed. The subject can be a negative (if the photo paper is negative paper, i.e. the exposed parts become dark) or it can be a positive photo itself (if the exposed parts become lighter).
I have to admit that at 4kg, it’s not a very elegant frame, but it cost me nothing and it was a fun little project. The next step is to choose a kind of plant, to extract the juices and to soak paper into it. I’ll expose that with a positive, because plants discolour by exposure. Because the exposure time is at least a few days, don’t hold your breath for a result !