Photography

Bruce Percy  
Charlie Waite  
Murray Fredericks  
Mark Raymond Mason: Fine Art Abstract Photography  
PhotoAccess - Public access arts centre based in Canberra  
Glen Turvey  
Rob Gray nature photography

Digital image processing

darktable - This is my current preferred raw processing tool  
The GIMP, an open source image editor  
hugin, an open source panorama photo stitcher  
Adjusting your monitor  
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  
Charles Poynton - Color technology - Gamma and colour explained