Difference between revisions of "Panchromatic"
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| − | '''Panchromatic''' means sensitive to all colours of light. Early film had very little sensitivity to red light, leaving red subjects as black in the resulting images. ''Panchromatic film'' - originally made by adding dyes to red-insensitive film, a result of work by [[Dr. Adolf Miethe]], is capable of recording red subjects. | + | '''Panchromatic''' means sensitive to all colours of light. Early ortochromatic film had very little sensitivity to red light, leaving red subjects as black in the resulting images. ''Panchromatic film'' - originally made by adding dyes to red-insensitive film, a result of work by [[Dr. Adolf Miethe]], is capable of recording red subjects. |
| + | Panchromatic films were, however, still too sensitive to blue light. | ||
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| + | A variation of the panchromatic film was the so called '''superpanchromatic''' film (also called hochpanschromatisch, i.e. highpanchromatic in German), which had additionally increased sensitivity to red color - as it was intended for use in artificial (tungsten) light of low color temperature. Supermanchromatic film had generally high speed (e.g. 400 ASA). | ||
Revision as of 15:33, 18 March 2009
Panchromatic means sensitive to all colours of light. Early ortochromatic film had very little sensitivity to red light, leaving red subjects as black in the resulting images. Panchromatic film - originally made by adding dyes to red-insensitive film, a result of work by Dr. Adolf Miethe, is capable of recording red subjects. Panchromatic films were, however, still too sensitive to blue light.
A variation of the panchromatic film was the so called superpanchromatic film (also called hochpanschromatisch, i.e. highpanchromatic in German), which had additionally increased sensitivity to red color - as it was intended for use in artificial (tungsten) light of low color temperature. Supermanchromatic film had generally high speed (e.g. 400 ASA).
