September 2006
Intermediate to advanced
256 pages
7h 41m
English
Content preview from The Practical Zone System, 4th Edition
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APPENDIX B What is a Pixel?
Pixel Size
The easiest way to confuse a beginning digital photographer would be to ask him or her, with a straight face: What size is a pixel?
The reason this is a trick question is because the size of a “pixel” entirely depends on the kind of pixel it happens to be. This is why the definitions of pixels and resolution can be so confusing.
The word “resolution” refers to the number of pixels there are per inch of a given imaging media.
In terms of size, pixels come in two different types: Fixed Hardware pixels and Variable Image pixels.
Screen Pixels
On the surface of a computer monitor, a pixel is a fixed and rigid physical entity that can never change size. The resolution of monitors is set to values like ...
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