Samsung NX20 Manual do Utilizador descarregar pdf (Página 176)

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Appendix > Glossary

Quality

An expression of the rate of compression used in a digital image. Higher

quality images have a lower rate of compression, which usually results in

a larger ﬁle size.

RAW (CCD raw data)

The original, unprocessed data, collected directly from the camera’s

image sensor. White Balance, contrast, saturation, sharpness, and

other data can be manipulated with editing software before the image is

compressed into a standard ﬁle format.

Resolution

The number of pixels present in a digital image. High resolution images

contain more pixels and typically show more detail than low resolution

images.

Noise

Misinterpreted pixels in a digital image that may appear as misplaced or

random, bright pixels. Noise usually occurs when photos are shot with a

high sensitivity or when a sensitivity is automatically set in a dark place.

NTSC (National Television System Committee)

A video color encoding standard used most commonly in Japan, North

America, the Philippines, South America, South Korea, and Taiwan.

Optical zoom

This is a general zoom which can enlarge images with a lens and does

not deteriorate quality of images.

PAL (Phase Alternate Line)

A video color encoding standard used in numerous countries throughout

Africa, Asia, Europe, and the Middle East.

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