Quiz 9- 28
ISO – a numerical rating (i.e. 400) that indicates the
sensitivity of a sensor.
F-stop – a numerical designation (f 2.8) indicating the aperture or lens opening
(f 2.8 very little in the
picture is in focus - > f 16 most or all of the picture looks sharp and
shows detail)
Depth of Field – The distance between the nearest and farthest
points that appear in sharp focus
Limited
Depth of Field
f 2.8 aperture is open all the way
f 2.8 aperture is open all the way
2. Wide depth of field
More than one part
of the photo is sharp
or in focus
f 16 aperture is almost completely closed
f 16 aperture is almost completely closed
(see photo below!)
Available light - The
light that already exists (as opposed to being added by the photographer like
using your on camera flash)
Automatic exposure – a mode of camera operation in which the camera automatically adjusts the
shutter speed and f-stop or both for a normal exposure.
Backup – an exact duplicate ( or copy) of a digital image or
file , made as protection against loss.
Contrast – the difference between the light and dark parts of
a picture or scean.
Histogram – a graph that shows the distribution of tone or
color in a digital image.
Sharp – Describes an image or part of an image that shows
crisp, precise texture and detail. The opposite of blurred or soft.
Shutter Speed controls
– The camera control that selects
the length of time the sensor is exposed to light
Telephoto
(zoom) effect – A change in
perspective caused by using a long-focal-length lens very far from all part o
the scene. Object appear closer together than they really are.
Tripod – A three-legged support for the camera
Underexposure – to make an exposure with too little
Light, making a picture that
is too dark
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