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
Image File Formats
Why choosy photographers don't choose GIF
Photographic image files are bitmaps: They are essentially collections of pixels along with "mapping" information that tells the computer how to arrange them.
|
TIFF • Most common format in print publishing.
JPEG • Small file size: Useful for email/web photos.
GIF • Limited to 256 colors.
BMP • Specific to Windows computers.
PNG • Versatile web graphic format.
|
There are many other formats (PCX, PSD, etc.) for specific software and applications.