more information on digital pictures

Filetype Information

JPG
- examples: Images of Vermont in JPG format from Google images
- history: Jpeg compression introduction
- information: wikipedia entry
PNG
- examples: PNG samples, images of Vermont in PNG format from Google images
- history: The story of PNG
- information: wikipedia entry
GIF
- examples: images of Vermont in GIF format from Google images
- history: The GIF Controversy
- information: wikipedia entry
BMP
- history: Some bitmap history
- information: wikipedia entry
PSD & PDF
- examples: USGS documents and maps
- history: The history of PDF
- information: wikipedia entry
TIFF
- examples: many archival photos at the American Memory Project [they also use JPGs]
- history: The TIFF/IT file format
- information: wikipedia entry

Plus, more than you ever wanted to know about file formats: Encyclopedia of Graphics File Formats [all online!]
More about image resolution, screen resolution and print resolution: CVM Image Standards

Websites for Sharing Pictures

Social Software Sites: Flickr & Yahoo Photos
More Standard Photo Sites: Shutterfly, Kodak Gallery [a comparison] or SnapFish
Look at other people's photos: Photographica.org, Smithsonian Images, New York Public Library