AT29610B - Variable filter for photography. - Google Patents
Variable filter for photography.Info
- Publication number
- AT29610B AT29610B AT29610DA AT29610B AT 29610 B AT29610 B AT 29610B AT 29610D A AT29610D A AT 29610DA AT 29610 B AT29610 B AT 29610B
- Authority
- AT
- Austria
- Prior art keywords
- photography
- variable filter
- filters
- colorless
- diaphragm
- Prior art date
Links
Landscapes
- Blocking Light For Cameras (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
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Empfindlichkeit gegen die verschiedenen Farben anhaften und ebenso leicht auch diejenige Dämpfung bewirken, welche der Natur des Lichtes, wie es die atmosphärischen Verhältnisse bedingen, entspricht.
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farblos gelassen ist. Durch entsprechende Verschiebung kann dieser farblose Teil für die
Zwecke der gewöhnlichen Photographie verwendet werden. Er hat lediglich den Zweck, eine Verschiebung der Bildebene bei Nichtbenutzung eines Filters zn verhindern.
Fig. 4 zeigt die schon erwähnte Anordnung, bei der die eine Hälfte beider Gläser l mit einer gleichförmigen Färbung m versehen, die andere n farblos gelassen ist. Bei Be- nutzung verschiedener Blenden bietet diese Form den Vorteil, dass sie mittels einer Skala leicht ermöglicht, die verschiedenen Farben in bestimmtem Verhältnis einwirken zu lassen.
Ist beispielsweise ein Viertel der Blendenöffnung farblos, drei Viertel farbfilternd eingestellt, so ist es leicht bei Wahl einer kleineren Blende unter Benutzung der Skala das gleiche
Verhältnis, welches durch die Veränderung der Blendenöffnung gestört wurde, wieder her- zustellen,
Ohwohl für Photographie jeder Art brauchbar, bedeutet diese Anordnung einen be- sonderen Vorteil für mehrfarl) ige Photograpie, indem durch Verstellung von mehreren
Filtern leicht die richtige Farbe des Filters erzielt werden kann.
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Sensitivity to the different colors adhere and just as easily produce the attenuation which corresponds to the nature of light as determined by atmospheric conditions.
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is left colorless. By shifting this colorless part for the
Can be used for ordinary photography purposes. Its only purpose is to prevent the image plane from shifting when a filter is not used.
4 shows the arrangement already mentioned, in which one half of the two glasses l is provided with a uniform color m, the other n is left colorless. When using different screens, this form has the advantage that it easily enables the different colors to act in a certain ratio by means of a scale.
If, for example, a quarter of the diaphragm opening is colorless and three quarters is set to be color filtering, it is easy to do the same if a smaller diaphragm is selected using the scale
Restore the ratio that was disturbed by the change in the aperture,
Although it can be used for photography of any kind, this arrangement has a particular advantage for multi-color photography, in that by adjusting several
Filtering the correct color of the filter can easily be achieved.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1905176320D DE176320C (en) | 1905-06-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT29610B true AT29610B (en) | 1907-08-26 |
Family
ID=5697409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT29610D AT29610B (en) | 1905-06-08 | 1906-05-31 | Variable filter for photography. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT29610B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0286989A2 (en) * | 1987-04-13 | 1988-10-19 | Fuji Photo Film Co., Ltd. | Exposure control device |
-
1906
- 1906-05-31 AT AT29610D patent/AT29610B/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0286989A2 (en) * | 1987-04-13 | 1988-10-19 | Fuji Photo Film Co., Ltd. | Exposure control device |
EP0286989A3 (en) * | 1987-04-13 | 1988-11-23 | Fuji Photo Film Co., Ltd. | Exposure control device |
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