Crossword-Solution: ORTHOCHROMATIC
We have 1 clue for the answer “ORTHOCHROMATIC”
| Clue | Answers |
|---|---|
| of photographic film, sensitive to all colours except red | 1 answer |
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Kind of apple
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E
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A
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T
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E
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R
Hint 1 meaning
One who, or that which, eats.
Hint 2 anagram
EERAT
Hint 3 another clue
greedy person
8 +1
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Sentences with ORTHOCHROMATIC (5)
There are many ways of producing an orthochromatic effect; one is the use of a glass tank placed behind or in front of the lens, in which a coloring matter from either a vegetable or mineral product is placed; this tank or cell is, however, only for use in the studio, as for outdoor photography we have a colored glass screen, so as not to be bothered with carrying colored solution.
One of the best orthochromatic effects made through this tank is with a three-grains-to-the-ounce solution of bichromatic of ammonia or bichromate of potassium.
Now make a plain negative, and see what has become of your clouds, hills, and the distance--not visible! Some photographers have been led to think that by underexposing they retain the distance, but they sacrifice the foreground; besides, it does not produce an orthochromatic effect.
The exposure through the yellow screen with an erythrosine plate is about the same as if you had no orthochromatic plate--a plain plate instead--provided you are not using too dark a yellow on your screen.
There was no retouching of any kind, and I think the print shows the value of using a color filter with an orthochromatic plate where colors are contrasted in the subject.