Aperture is measured in __________.

Aperture is measured in __________.

• A. degrees
• B. pixels
• C. f-stops
• D. seconds

Answer: (C)

Aperture is expressed using f-stops. This naming system describes the size of the lens opening that light passes through, specifically the ratio of the lens’s focal length to the opening diameter. Lower f-stop numbers mean a larger opening, which lets in more light and gives a shallower depth of field, while higher f-stop numbers mean a smaller opening, letting in less light and producing a deeper depth of field. The other options don’t relate to the opening size: degrees measure angular field of view, pixels refer to image resolution, and seconds describe exposure time (shutter speed), not the size of the aperture.

Aperture is expressed using f-stops. This naming system describes the size of the lens opening that light passes through, specifically the ratio of the lens’s focal length to the opening diameter. Lower f-stop numbers mean a larger opening, which lets in more light and gives a shallower depth of field, while higher f-stop numbers mean a smaller opening, letting in less light and producing a deeper depth of field. The other options don’t relate to the opening size: degrees measure angular field of view, pixels refer to image resolution, and seconds describe exposure time (shutter speed), not the size of the aperture.