1. Aperture- In optics, an aperture is a hole or an opening through which light travels.

2.Shutter Speed- n photography, shutter speed or exposure time is the effective length of time a camera's shutter is open.

3. ISO- An ISO image (International Organization for Standardization) is an archive file (also known as a disk image) of an optical disc, composed of the data contents of every written sector of an optical disc, including the optical disc file system.

 4. Depth of Field- In optics, particularly as it relates to film and photography, depth of field (DOF) is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image

5. Motion Blur- Motion blur is the apparent streaking of rapidly moving objects in a still image or a sequence of images such as a movie or animation.

6. Noise and light sensitivity- Film speed is the measure of a photographic film's sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system.