Negative Control
Introduction to Exposure
Measuring, controlling and correcting film exposure
Taking focus and adequate depth of field for granted, film exposure and development are the most significant controls of negative quality. In this chapter, we will cover the fundamentals of film exposure and its control. Film development and a closer look at the Zone System, which combines exposure and development, are covered in following chapters.
Photographic exposure is the product of the illumination and the time of exposure. In 1862, Bunsen and Roscoe formulated the reciprocity law, which states that the amount of photochemical reaction is determined ...
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