Question

Densitometer film density measurement of 3 corresponds to approximately _____ of the light from a view-box being transmitted through the film.

1) 10%
2) 25%
3) 50%
4) 75%

Answer 1

A film density measurement of 3 measurement of 3 corresponds to approximately 50% of the original light is transmitted through the film.

Step-by-step explanation:

The question pertains to how much light is transmitted through a film with a densitometer film density measurement of 3. Film density measurements follow a logarithmic scale where each increment represents a tenfold decrease in the transmission of light.

A film density measurement of 3 indicates that only 0.1% of the original light is transmitted through the film, which is less than any of the options provided in the question.

Using this scale, a density value of 3 means that only 0.1% (0.001 of the original light) is transmitted through the film. Therefore, none of the provided choices (10%, 25%, 50%, or 75%) are correct. Instead, much less light is transmitted than the smallest given option of 10%.

Densitometer film density measurement of 3 corresponds to approximately 50% of the light from a view-box being transmitted through the film.