A very nice ultrawide pinhole camera from James Guerin at aupremierplan.
Here is his description the loading of this camera:
Curved film plane?
The film plane is curved to ensure even exposure across the negative, not possible with a flat film plane with such an extreme wide angle view (141° angle view of equates to a focal length of 6.4mm in 35mm terms). T
A side-effect of the curved film plane is that it results in a curved horizon in your photos unless the photo is taken with the camera level. This is why a precise bubble level features on the top plate of the camera.
- CNC machined body
- Curved film plane with a radius of 70mm (focal length).
- Large 6x17cm (57x170mm) negative giving 4 shots per roll of film (120 roll film).
- Angle of view: 141 degrees horizontal, 44 degrees vertical.
- Laser drilled 300 micron (0.3mm) pinholes (f/233). Pinhole material thickness = 50 microns (.002″).
- Magnetic shutter
- Dual pinhole allows horizon to be placed on upper or lower third (camera level)
- Accurate aiming lines for composition.
- Precise bubble level.
- Standard 1/4-20 tripod mount socket
- Rubber feet
- Film spool tensioner at take up spool