Aperture and depth of field

Aperture is hole within a lens through which light travels into the camera
how aperture effects exposure

• Aperture has several effects on your photograph including brightness
• large aperture - lot of light
• small aperture - small lot of of light

depth of field - focus part of your photo
shallow depth of field - background completely out of focus - portrait

apertures are expressed as F stops
wide aperture - lot of blur

very blurring
highest aperture - 29.1



Shutter speed - amount of time that the shutter is open
ISO - measure of digital camera sensors


shutter speed:

• changing exposure of image
• creating dramatic effects
• motion blur
• fast shutter speed can stop motion

if we had a camera set on 1/80 shutter speed, it will let in a lot of light.
how do we darken the image?
Have a smaller aperture.