Terms starting with H
32 terms · page 1 of 2
Half-frame Format
A 35 mm format using an 18 by 24 millimetre vertical frame, doubling the number of exposures on a roll.
Printing, Display & OutputHalftone
The reproduction of continuous tone by a grid of dots that vary in size, creating the impression of shades from a single ink.
Exposure & MeteringHandheld Light Meter
A separate instrument for measuring incident, reflected or flash light independently of the camera.
Lighting & FlashHard Light
Light from a source that is small relative to the subject, producing sharply defined shadows with abrupt edges.
Printing, Display & OutputHard Proof
A physical test print made to verify colour and tone before committing to a final print run.
Printing, Display & OutputHDR Display
A screen capable of much higher peak brightness and contrast than conventional displays, showing a wider range of tones.
Post-Processing & RetouchingHDR Merge
Combining bracketed exposures into one file holding a greater dynamic range than any single frame could.
Composition & Visual DesignHeadroom
The space between the top of a subject's head and the upper edge of the frame.
Genres, Movements & TheoryHeadshot
A tightly framed portrait of the head and shoulders, made for professional identification and representation.
Post-Processing & RetouchingHealing Brush
A retouching tool that copies texture from a source area while blending its tone and colour into the destination.
Files, Metadata & WorkflowHEIF
A modern container format using video-derived compression to store images at roughly half the size of JPEG for equivalent quality.
Composition & Visual DesignHigh Angle
A viewpoint above the subject, looking downward.
Sensors & Digital CaptureHigh ISO Noise Reduction
In-camera processing that smooths noise in high-sensitivity images before writing the JPEG.
Lighting & FlashHigh-key Lighting
A lighting approach in which most tones sit in the upper half of the range, with few dark shadows and a bright background.
Motion, Video & Creative TechniquesHigh-speed Photography
Capturing events too fast for the eye, using very brief flash durations or specialised high-frame-rate cameras.
Lighting & FlashHigh-speed Sync
A flash mode that fires a rapid train of pulses during the whole travel of the shutter slit, allowing flash above the normal sync speed.
Exposure & MeteringHighlight Alert
A playback warning, often called blinkies, that flashes any area of the image where the brightest tones have clipped.
Post-Processing & RetouchingHighlight Recovery
The reconstruction of detail in bright areas where one or two colour channels have clipped but at least one has not.
Exposure & MeteringHighlight-weighted Metering
A metering pattern that biases exposure toward protecting the brightest area of the frame from clipping.
Exposure & MeteringHistogram
A graph of how many pixels in an image fall at each brightness level, from black on the left to white on the right.
Motion, Video & Creative TechniquesHoly Grail Transition
A time-lapse that runs across a large change in light, such as day into night, requiring exposure to change during the sequence.
Lighting & FlashHoneycomb Grid
A cellular insert placed over a light that narrows its beam by absorbing rays travelling at wide angles.
Composition & Visual DesignHorizon Line
The line where sky meets land or sea, which in a photograph always sits at the camera's own eye level.
Sensors & Digital CaptureHot Pixel
A photosite with abnormally high dark current that records as a bright coloured dot in long exposures.