Which aperture setting yields the greatest depth of field to keep foreground and background in focus?

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Multiple Choice

Which aperture setting yields the greatest depth of field to keep foreground and background in focus?

Explanation:
Depth of field increases when you stop down to a smaller aperture, meaning using a smaller opening (higher f-number) expands the range of distances that appear sharp. Among the given settings, the smallest opening provides the most depth of field, so foreground and background stay in focus together. The other options use wider openings, which give a shallower depth of field and less of the scene will be sharp from near to far. (Note: extremely small openings can introduce diffraction and soften overall sharpness, but at typical sizes like this, the smallest opening yields the greatest depth of field.)

Depth of field increases when you stop down to a smaller aperture, meaning using a smaller opening (higher f-number) expands the range of distances that appear sharp. Among the given settings, the smallest opening provides the most depth of field, so foreground and background stay in focus together. The other options use wider openings, which give a shallower depth of field and less of the scene will be sharp from near to far. (Note: extremely small openings can introduce diffraction and soften overall sharpness, but at typical sizes like this, the smallest opening yields the greatest depth of field.)

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