Related terms:
lens
pupil
stop
curve
ratio
blade
lenses
sword
lower
aperture
higher
diaphragm
diameter
aperture stop
telescope
shutter speed
exposure
optical system
focal length
field of view
depth of field
amount of light
working aperture
photographic
relative aperture
photography
Wikipedia sources:
Depth of field
Aperture
Blade
Ogive
River Severn
F-number
Japanese sword
Progressive scan
Monster Hunter Freedom 2
Context for words:
sharpness
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