Tech Snippet Raster graphics file formats
Joint Photographic Experts Group
Graphics Interchange Format
Portable Network Graphics
Tagged Image File Format
Gif
Jpeg
Png
Tif
Proprietary Compuserve
Proprietary JPEG
Open Format
Proprietary Adobe
Lossless compression
Lossy compression
Lossless compression
Lossless compression
- Bit colors max
- Bit per channel
- Bit per channel
- Bit per channel
one color transparency
no alpha layer
alpha layer
multiple layers
web use animation
web use compression
web use transparency
general use versatility
Gif
Burón, Javier. Lasso Lamp.
Jpeg
Png with alpha
Tif multilayered
Base
Tif multilayered
Shadows & reflections
Tif multilayered
Z-depth channel
Tif multilayered
Depth of field eect
Tech Snippet Resolution
Pixel (picture element) Is the smallest element in a graphic image; it is an abstract element without an specific shape or scale.
FOA. Virtual House.
158 123 000
R 157 G 129 B 000
R 155 G 138 B 000
R 151 G 137 B 000
R 142 G 118 B 000
R 11 G 08 B 00
147 173 000
R 138 G 114 B 000
R 144 G 129 B 000
R 134 G 121 B 000
R 122 G 099 B 000
R 11 G 08 B 00
104 072 000
R 100 G 078 B 000
R 100 G 079 B 000
R 087 G 065 B 000
R 082 G 058 B 000
R 11 G 1 B 00
066 034 004
R 058 G 036 B 000
R 045 G 030 B 000
R 037 G 027 B 000
R 041 G 030 B 004
R 11 G 08 B 00
Pixels per inch ppi Is the measure of image resolution. î‚ťe number of pixel per linear inch. It establishes the physical scale of an image.
Dots per inch dpi Is the measure of printing resolution. î‚ťe number of ink dots per linear inch. It is dependant of the printing technology
Computer Screens 72ppi–150ppi Desktop printing 150ppi–300ppi Press printing 90ppi–300ppi
Tech Snippet Color depth
Color depth Is the number of bits used to represent the color of a single pixel in a image. e maximun number of dierent colors that an image can have
-bit color (¹ = colors) monochrome
-bit color (⁸ = colors) gray scale
-bit color (²⁴ = ,, colors) truecolor
-bit color -bit floating point data High Dynamic Range Images
High Dynamic Range Images Low Exposure
High Dynamic Range Images Medium Exposure
High Dynamic Range Images High Exposure
Channels Is a layer of an image that stores each color component or transparency information
Red
Green
Blue
Alpha