The Sharpness Characteristics of a New Black-and-White Positive Fine-Grain Film
Visual contrast is largely dependent upon the sharpness of the photographic reproduction. This sharpness can be characterized to a certain extent by the modulation transfer function (MTF) of the material involved. It appears that the MTF of modern commercial black-and-white print films all have at least one common aspect: the modulation transfer at low frequencies does not reach to the 100% level. Therefore, a loss of contrast is introduced in the system by the printing material. The relative importance of the reproduction of these details in the whole of the reproduction varies in inverse ratio to the enlargement scale. The MTF of an experimental positive fine-grain film called Type 562 E has been improved so that the visual contrast is increased.
- Print ISSN
- 0361-4573
- Published
- 1967-04
- Content type
- Original Research
- DOI
- 10.5594/J09167