Pixels to Pictures
Introduction 3 steps 1 pixel Hexadecimal Red-Green-Blue Colors from 0-255 17 million colors More pixels = better Two parts of a file Overview Options Pixel positions Pixel values Brightness Brightness example Contrast Contrast example Color Color example ND grad Sharpen Blur Acquiring an image Scanners Scanner specs Resolution Bit depth & DMAX Other Digital cameras Sensor types Digicam pixels Four into one Interpolation More sensors Print size Output What is resolution? Dots vs. pixels
Introduction 3 steps 1 pixel Hexadecimal Red-Green-Blue Colors from 0-255 17 million colors More pixels = better Two parts of a file Overview Options Pixel positions Pixel values Brightness Brightness example Contrast Contrast example Color Color example ND grad Sharpen Blur Acquiring an image Scanners Scanner specs Resolution Bit depth & DMAX Other Digital cameras Sensor types Digicam pixels Four into one Interpolation More sensors Print size Output What is resolution? Dots vs. pixels
Printer resolution
Output resolution Print size 2 Enlarging Formats Conclusion Links Software
Printer Resolution
Dots per inch
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Better printers have higher resolution: More dots per inch. • 400dpi is the bare minimum for photographic prints. • More than around 1500dpi gives little if any benefit. Higher printer resolution will give you better tonal quality, particularly in large areas of uniform color and density (like blue skies, for example) and smoother transitions from one color to another.
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