Difference between revisions of "Instoscope"
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| − | The '''Drem Instoscope''' | + | The '''Drem Instoscope''' is an extinction meter. When viewing through the ocular one could see a number of letters. The least visible letter is explained on the table which is wrapped around the instrument. The table shows the possible shutter-speed/aperture combinations for the least visible letter. |
[[Category:Meters]] | [[Category:Meters]] | ||
Revision as of 06:21, 27 May 2020
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| the extinction meter image by Mario Groleau (Image rights) |
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| Drem Instoscope image by Anssi Puisto (Image rights) |
The Drem Instoscope is an extinction meter. When viewing through the ocular one could see a number of letters. The least visible letter is explained on the table which is wrapped around the instrument. The table shows the possible shutter-speed/aperture combinations for the least visible letter.
