In photography, the diaphragm is best described as which of the following?

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Explore Alberta's Grade 8 Science curriculum on Light and Optical Systems. Test your knowledge with engaging quizzes including flashcards and multiple choice questions. Prepare effectively for your exam!

Multiple Choice

In photography, the diaphragm is best described as which of the following?

Explanation:
The diaphragm functions like the iris of the eye, adjusting the size of the lens’s aperture. By opening the aperture wider, more light can enter, making the photo brighter and giving a shallower depth of field. Narrowing the aperture reduces light in and increases depth of field. This mechanism is about controlling the opening through which light passes, not about measuring light or focusing it, and it’s not a breathing muscle. So the diaphragm is the device that controls the size of the aperture.

The diaphragm functions like the iris of the eye, adjusting the size of the lens’s aperture. By opening the aperture wider, more light can enter, making the photo brighter and giving a shallower depth of field. Narrowing the aperture reduces light in and increases depth of field. This mechanism is about controlling the opening through which light passes, not about measuring light or focusing it, and it’s not a breathing muscle. So the diaphragm is the device that controls the size of the aperture.

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