Answer:
The correct answer to the following question will be "Aperture".
Step-by-step explanation:
- An Aperture is an opening or a hole by which light passes. More primarily, an optical system's aperture and focal length determine a package of rays cone angle that reaches a focus throughout the image plane.
- Aperture is also the name given to the volume that the lens of a given camera opens.
- In other contexts, the word aperture can also be used to indicate a system that blocks light outside of a given region. For example, in astronomy, a photometric aperture around a star typically correlates to a circular window across the picture of a star under which the intensity of light is assumed.
The other three options will not be the answer of the given question because, ISO (The ISO is an international standard-setting body consisting of members from different organizations and national standards), Resolution (the level of determination) and Shutter speed (the time frame the film or digital sensor is exposed to light inside of the camera when a camera shutter is open while taking a photo).
So, Aperture is the right answer.