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| Making a Large Format Camera |
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| PK:
X Ray film is placed behind an intensifier plate coated with a material that fluoresces when x-rays hit. So XRay film is visible light film. Not sure about it's contrast curve, but I suspect it would be a high contrast film which would make it good for landscape shots.... |
| NormanV:
It is possible to buy direct positive paper from Ilford (Harman Group) that saves all the messing about scanning a negative print. |
| S. Heslop:
Thanks for the suggestions. Got the rear and front standard partially made. They're pretty shoddy and not as square as i'd like, but it shouldn't be too much of a problem. Also got the front... thing clamped up. I think next i'll be trying to make some patterns, which should hopefully be a bit more interesting. At this point I wish I just made a box and got it over with, but alas~ |
| RotarySMP:
Nice work, cool project. I made a 4x5 back in the 90's. A copy of a Tachihara, flat bed of wood with brass fittings. Since your uncle will only be contact printing paper negatives, almost any lens will give an improvement on a pin hole. Before I picked up a scratched rear element Linhof/Scheider 150 for a song, I used a brass plate with a 1/8" hole drill in as an aperture, and a pair of Rolleiflex close up lenses double sided taped to each side. The black plastic cover from the close up lens sticking to the tape was the manual shutter. work surprisingly well, and shortened the exposure times from the pin hole considerably. Not sure what this will go to, but could be a very cheap solution. http://www.ebay.co.uk/itm/Carl-Zeiss-TESSAR-250-4-5-5632-Large-format-plate-mount-Great-condition-/122191048020?hash=item1c73276d54:g:bXQAAOSwImRYCH42 Often shutters are more expensive than lenses. Mark |
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