01-12-2012, 04:15 PM
DIGITAL PHOTOGRAPHY
[attachment=42106]
CAMERA BASICS
F-Stop (how much light is seen, how much the aperture is open)
Shutter Speed (how long the light is seen in the aperture)
FILM SPEED (how fast the film itself responds to this light)
F-STOP
HOW MUCH LIGHT IS SEEN
Sometimes known as ‘aperture’
Ranges from about 1.8 to 32
A higher number (i.e. 32) means less light is ‘seen’.
A lower number (i.e. 1.8) means more light is ‘seen’.
SHUTTER SPEED
FASTER SPEED
ADVANTAGES
Reduces blurriness as image is ‘seen’ only briefly – great for sports events.
DISADVANTAGES
Less time for light to enter camera
Requires bright conditions
FILM SPEED
Traditional cameras use film of different sensitivities. It is measured by its ISO number, i.e. 64, 100 400
Slower speed (i.e. 64) is good for enlarging but requires bright light and/or slow shutter speed and/or lower F-stop.
Faster Film (i.e. 400) is poor for enlarging but needs less light and thus good for indoor photography.
Digital Cameras do not use film per se. They use a technology called CCD (Charge Coupled Device) which senses images.
[attachment=42106]
CAMERA BASICS
F-Stop (how much light is seen, how much the aperture is open)
Shutter Speed (how long the light is seen in the aperture)
FILM SPEED (how fast the film itself responds to this light)
F-STOP
HOW MUCH LIGHT IS SEEN
Sometimes known as ‘aperture’
Ranges from about 1.8 to 32
A higher number (i.e. 32) means less light is ‘seen’.
A lower number (i.e. 1.8) means more light is ‘seen’.
SHUTTER SPEED
FASTER SPEED
ADVANTAGES
Reduces blurriness as image is ‘seen’ only briefly – great for sports events.
DISADVANTAGES
Less time for light to enter camera
Requires bright conditions
FILM SPEED
Traditional cameras use film of different sensitivities. It is measured by its ISO number, i.e. 64, 100 400
Slower speed (i.e. 64) is good for enlarging but requires bright light and/or slow shutter speed and/or lower F-stop.
Faster Film (i.e. 400) is poor for enlarging but needs less light and thus good for indoor photography.
Digital Cameras do not use film per se. They use a technology called CCD (Charge Coupled Device) which senses images.