Record 293 of 412
Photographer: |
Claudet, Antoine François Jean (1797-1867) |
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Full title: |
Focimeter. It is impossible to obtain well-defined photographic pictures, without previously ascertaining the exact position of the photogenic focus, which is easily done by taking the image of the focimeter on a photographic surface, and comparing the segments of the apparatus with the image, then on the ground glass and the photographic surface. |
Process: |
Not Listed [Apparatus] |
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Original price: |
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Exhibitor: |
Claudet, Antoine François Jean |
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