reciprocity refers to the relationship between different choices of apertures and shutter speeds,...
TRANSCRIPT
ReciprocityRefers to the relationship
betweenDifferent choices of apertures
and shutter speeds,That result in a
Balanced Exposure.
Reciprocityis
Equal Balance Exposures
We refer to these equal balanced exposures as
> Equivalents <
“Review”
Reciprocity For example, we meter a scene to be
balanced at:F8 @ 1/60th
Reciprocity
This chart indicates all possible balanced exposures using different
apertures and shutter speeds.
Equivalents
Example:Balanced Exposures f/5.6 @ 1/125
• f/2.8 @ 1/500• f/4 @ 1/250• f/5.6 @ 1/125 • f/8 @ 1/60• f/11 @ 1/30
EquivalentsQuiz:
• f/2 @ 1/1000• f/___ @ 1/___• f/4 @ 1/250 • f/___ @ 1/___• f/8 @ 1/60
EquivalentsAnswers:
• f/2 @ 1/1000• f/2.8 @ 1/500• f/4 @ 1/250 • f/5.6 @ 1/125• f/8 @ 1/60
Why Do We Practice
Reciprocity
?
EquivalentsWhich Shooting Mode Do You
Use?
• Manual (gives you full control)
• Shutter Priority (TV)• Aperture Priority (AV)
EquivalentsManual Mode:
allows you to control both “Movement” and “Depth of
Field” freely without having to switch shooting
modes.
EquivalentsAperture Priority Mode:
allows you to control “Depth of Field”
by choosing the f/stop you wish to shoot at and the camera
will choose the correct shutter speed to give you a
balanced exposure.
EquivalentsShutter Priority Mode: allows you to control
“Movement”by choosing the shutter speed you wish to shoot at
and the camera will choose the correct f/stop to give you a balanced
exposure.
EquivalentsBoth Shutter Priority &
Aperture Priority Shooting Modes
make it easier to do equivalents so we can take advantage of the
creative controls that our cameras allow us to do!
Lens Flare
Lens Flare
• When an image includes a very bright light source, light enters the lens and hits the sensor
• Zoom lenses tend to exhibit greater flare
• Lens flare manifests itself as starbursts, polygonal shapes, rings or circles in a row across the image
Lens Flare• Lenses have several “lens elements”• Non-image light does not pass along
its intended path, instead reflects internally on lens elements any # of times before reaching the sensor.
Lens Flare
• Even if the photo itself contains no light source, stray light may still enter the lens if it hits the front element.
Lens Flare
• To avoid lens flare, point camera away from bright light and use a lens hood, gobo, or barn doors
Lens Flare
• Lens flare is often deliberately used to invoke a sense of drama.
Next Week:
A3 dueGallery Paper is due