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H
HAD
CCD - Sony's latest CCD imager, HAD = Hole
Accumulation Diode
Halftone
Image - An image reproduced through a special
screen made up of dots of various sizes to simulate
shades of gray in a photograph. Typically used for
newspaper or magazine reproduction of images but it
is also how today's inkjet printers work. Halftoning
or dithering are the methods used to produce a smooth
gradation of colour versus distinct bands of colour
or moirè patterns.
HD
- Hard drive (aka HDD), the internal, large-capacity
data storage unit in today's PC computers.
HDTV
- High Definition Television. New video "standard"
that will resolve 1,125 lines in the United States
instead of the traditional 525 lines of the NTSC standard.
Histogram
- A bar graph analysis tool that can be used to identify
contrast and dynamic range of an image. Histograms
are found in the more advanced digicams and software
programs (graphic editors) used to manipulate digital
images. The histogram shows a scale of 0 - 255 (left
to right) with 0 being black and 255 being white.
Hot
Shoe - A flash connector generally found on
the top of the camera that lets you attach a flash
unit and trigger it in sync with the shutter.
Hologram
Laser AF - Sony introduced a new laser-assisted
auto focus system on the Cyber-shot DCS-F707 that
uses a safe Class 1 laser to paint a grid on the subject
that makes the auto focus fast and accurate.
Hue
- A term used to describe the entire range of colours
of the spectrum; hue is the component that determines
just what colour you are using. In gradients, when
you use a colour model in which hue is a component,
you can create rainbow effects.
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