aperture- is like a pupil, controlled by the f-stop which contolls having a large opening which brings in more light
shutter-The shutter blocks all light from exposing the film UNTIL you press
the button. Then it quickly opens and closes, giving the film a brief
flash of light.You can control the length of time the shutter remains open by setting the SHUTTER SPEED.
Longer shutter speeds = more light and shorter shutter speeds = less light
exposure- is the amount of light allowed to fall on each area unit of a photographic medium (photographic film or image sensor) during the process of taking a photograph
depth of field- is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image
F-stop- an optical system is the ratio of the lens's focal length to the diameter of the entrance pupil.It is a dimensionless number that is a quantitative measure of lens speed, and an important concept in photography.
focal length- where the subject is essentially infinitely far away, longer focal length (lower optical power) leads to higher magnification and a narrower angle of view; conversely, shorter focal length or higher optical power is associated with a wider angle of view
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