Difference between revisions of "Red window"
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In 1892 the '''red window''' was introduced by the [[Boston Camera Manufacturing Company]] as a means to control film advance of paper-backed [[rollfilm|roll film]] in the [[No. 2 Bulls-Eye]] camera. Later this became the film advance control device of nearly all cameras for the popular roll film formats [[127 film|127]] (4cm) , [[120 film|120 and 620]] (6cm). The window shows an exposure number that is printed on the film's backing paper. The appearance of the next exposure number in the window means that the film is advanced enough for achieving non-overlapping exposures. Some cameras have an exposure counting window of different color, for example the [[Rollex 20]] (green window), but red was by the most popular, as early black-and-white films were quite insensitive to red light. | In 1892 the '''red window''' was introduced by the [[Boston Camera Manufacturing Company]] as a means to control film advance of paper-backed [[rollfilm|roll film]] in the [[No. 2 Bulls-Eye]] camera. Later this became the film advance control device of nearly all cameras for the popular roll film formats [[127 film|127]] (4cm) , [[120 film|120 and 620]] (6cm). The window shows an exposure number that is printed on the film's backing paper. The appearance of the next exposure number in the window means that the film is advanced enough for achieving non-overlapping exposures. Some cameras have an exposure counting window of different color, for example the [[Rollex 20]] (green window), but red was by the most popular, as early black-and-white films were quite insensitive to red light. | ||
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* [http://mysite.wanadoo-members.co.uk/kevins_pages/a02.html red window], drafted on [http://mysite.wanadoo-members.co.uk/kevins_pages Kevin's pages] | * [http://mysite.wanadoo-members.co.uk/kevins_pages/a02.html red window], drafted on [http://mysite.wanadoo-members.co.uk/kevins_pages Kevin's pages] | ||
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Revision as of 14:34, 12 August 2008
Glossary Terms
In 1892 the red window was introduced by the Boston Camera Manufacturing Company as a means to control film advance of paper-backed roll film in the No. 2 Bulls-Eye camera. Later this became the film advance control device of nearly all cameras for the popular roll film formats 127 (4cm) , 120 and 620 (6cm). The window shows an exposure number that is printed on the film's backing paper. The appearance of the next exposure number in the window means that the film is advanced enough for achieving non-overlapping exposures. Some cameras have an exposure counting window of different color, for example the Rollex 20 (green window), but red was by the most popular, as early black-and-white films were quite insensitive to red light.
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| Looking behind a 120 film box camera's door: the number visible through the red window is one of the exposure numbers of the eight possible 6×9cm exposures. Other number rows are visible through exp. counting windows of cameras with smaller frame formats for 12 or 16 exposures.. |
Links
- red window, drafted on Kevin's pages
