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Reproduction ratio is the relation of the image size to be recorded on the film to the subject size. For ex- ample, if the image on the focusing screen is
Focusing at predetermined reproduction ratio
In front of the distance scale are two reproduction ratio scales engraved in orange. The inner scale with figures from 1:10 to 1:2 represents values obtained when the lens is used alone, while the outer scale with figures from 1:2 to 1:1 represents values obtained with the