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Glossary
H
Hanger:
A frame for holding sheet film while processing in a tank.
Hard:
Describes a scene, negative, or print of high contrast. Opposite:
soft or low contrast.
Heliography:
An early photographic process, invented by Niepce, employing a polished
pewter plate coated with bitumen of Judea, a substance that hardens
on exposure to light.
Highlight:
A very dense, dark area in a negative.
Hot
shoe:
A bracket on the top of a camera that attaches a flash unit and
provides an electrical connection to synchronize the camera shutter
with the firing of a flash.
Hyperfocal
distance: The distance
to the nearest plane of the depth of field (the nearest object in
focus) when the lens is focused on infinity; also the distance to
the plane of sharpest focus when infinity is at the farthest plane
of the depth of field. Focusing on the hyperfocal distance extends
the depth of field from half the focal distance to infinity.
Hypo:
A common name for any fixer; taken from the abbreviation for sodium
hyposulfite, the previous name for sodium thiosulfate (the active
ingredient in most fixers).
Hypo
clearing agent or hypo neutralizing
agent: See Washing
aid.
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