Reflex Camera Obscura with Improved Lenses
Specially designed for indoor use, this camera obscura has a third large aperture rectangular lens to increase the illumination of the image at the corners and edges of the ground glass screen, working the same way as a Fresnel lens produces a bright viewfinder image in a modern reflex camera. On the other hand, the large aperture lens only allows for a small depth of field, hence rackwork was added to facilitate focusing. The image is screened by a metal folding eye shade.
- William Storer - surviving instruments as of Feb 2008
- Inventory no. 62524 - Inscriptions
- Inv. 62524 - Patent
- Inv. 62524 - parts and operation
- Inventory no. 62524 - Former Display Label