Files needed to work on internet AI. PGD, JPG, GIF.
1. File Formats:
a) All documents, or files, are packaged un different formats.
b)The format is determined often by the files origin.
2. Lossy or Lossless:
a) Graphic image formats fall under 2 categories of compression.
b) With Lossy. image data is LOST or REDUCE for smaller file sizes but can cause poor image quality. Can result in showing "Compression Artifacts"
3. Graphic Formats:
a) TIF, JPG and GIF are 3 most common formats for common activities such as printing, scanning and displaying images over the internet.
b) PGN is a common web format, is high quality and can contain an alpha (transparency) channel.
c) Each format has its own advantages, disadvantages.
4. File Format: TIF
a) Stands for Tagged Image Format.
b) Common format for desktop publishing, print, photo & graphic design.
c) Is a LOSSESS file format. It retains image data.
5. File Format: JPG
a) Stands for joint Photographers Expert Group.
b) Created for digital photography & works best for photo content.
c) Is a LOSSY format.
d) Can reduce an image file size bye 10:1
e) The level compression is adjastable.
6. File Format GIF
a) Stands for Graphic Interchange Format.
b) If best for graphics or images that have flat color or even tone, such as a cartoon.
c) Reduces image size by ''Indexing'' color from 3 channels to 1.
d) Is adjustable by changing color bit levels from 1 to 8.
e) Contains no DPI (Dots Per Inch) data for printing. Not a proper format fro print.
7. Photographic Images:
Properties: Photos are continuos tones, 24 bit color or 8 bit Gray, no text, few lines & edges,
For Unquestionable Best Quality: TIF or PNG
8. Pixels:
a) 2 tipes of pixels contiguous & not contiguous.
b) TIF & JPG are the best for images with pixels that blend in color. these are called ''contiguous pixels''
9. Best Format to Print:
a) JPG
10. To print in the web:
a) GIF
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