Photography

Landscape Photographer Chester Tugwell
Glen Turvey
Fine Art Photography of Dublin and Ireland by Philip Pankov
Rob Gray nature photography
Dennis Rittson's Bushwalking Photos
Wise's Wilderness - Images of places that are reached on foot
Mark Raymond Mason: Fine Art Abstract Photography
John Greenwood: Large Format Landscape and Nature Photography
A large format photography home page
PhotoAccess - Public access arts centre based in Canberra

Digital image processing

Charles Poynton - Color technology - Gamma and colour explained
Color management and color science: Introduction by Norman Koren the best explanation I've ever read of why you can't reproduce all the colours you can see with 3 primary colours
Adjusting your monitor
How JPEG works
dcraw, an open source decoder for camera RAW files
The GIMP, an open source image editor
hugin, an open source panorama photo stitcher

Silly or interesting stuff

The Postmodernism Generator
The Fibonacci Numbers and Golden section in Nature - 1