Zero 2000 Pinhole Fixed (Mostly)
I think I have largely corrected the main problems with my Zero Image 2000 pinhole camera which I documented in a post (link) a couple of days ago. I blackened the brass fitting that holds the pinhole, both inside and outside, with a felt pen. The surface is still shiny and this may explain on some photos a strange arc of flare in the upper left. I suspect blackening the brass is what eliminated the circular flare I was getting before. Eventually it would be worth applying a flat black paint to the brass fitting.
I also attached felt to the underside of the shutter, and that is most likely what eliminated the horizontal beaded flare which probably was light leaking under the shutter. There is still flare when shooting into the sun, but it is mostly the kind of flare common to pinhole cameras and thus expected and acceptable.
The only bit not working well enough for my liking is the shutter which, though it slides much more smoothly, still does not open smoothly and sometimes sticks partly open, or opens in stages leaving vertical banding where the right side has a shorter exposure. I put some slippery baking paper underneath the brass plate on top of the shutter and that helped it slide more smoothly, but the problem persists. I will have to get some proper low-friction tape for this surface. Making sure the shutter is open results in a lot of unnecessary camera motion and blurring of the image.
I see why Zero Image developed a shutter that can be fired with a cable release. If it was not so pricey, I would buy and install one. I guess I will have to experiment with some other solutions. For instance, if I pull the shutter from exactly in the centre of the ridge designed for that purpose, then it slides much more reliably than if I am a touch off centre- perhaps it needs a notch of knob so I can feel the centre.
Anyway, it is much better now, and I look forward to giving it another try soon.
Zero Image 2000 pinhole camera, Kodak Ektar, expired 09/2014, metered at 100ISO for F128 (pinhole is F138), commercial processing and low res scan