Interesting photography resources

Again as a Nikon fan, the first few sites I mention are specialized in providing useful technical information about mainly Nikon equipment. Of course other sites about photography in general are mentioned as well.

 General info and reviews

• Bjorn Roslett 
  This is a Norwegian guy who is one of the best recognized experts of Nikon lenses. His site is one of the best resources to evaluate the capabilities of a specific Nikon lens on a film or digital body. The site is full of interesting stuff.
• Nikonlens 
  A general site providing links to lens reviews (Nikon and third party lenses for Nikon camera's)
• Malaysian photo club 
  This is a kind of encyclopedia of all existing Nikon lens. The amount of information and knowledge collected on this site is amazing. The place to be if you are looking for information on old or very old lenses or to see some crazy lenses (incredible fisheyes or superlong telelenses)  
  
• Lens resource 
  An amazing list (database) of all Nikon lenses ever made, with introduction dates, serial numbers... hosted in New Zealand.  
  
• Photozone
  An interesting site of a German guy, borrowing equipment from fellow photographers and publishing "scientific" reviews of many lenses and other gear. The tests are done systematically, and give a pretty good idea of the actual technical performance of the lens: MTF (resolution), chromatic aberration, vignetting... Really worth a visit before buying a lens.
  He has lots of stuff about Nikkor, Canon lenses as well as many third party lenses (Tokina, Sigma, Tamron) 
  
• Rob Galbraith
A lot of reviews of recent useful products for photographers. Some people find the reviews less objective than others, but I find it an interesting source of information. Rob Galbraith is well known and appreciated in the photo community.
• Ken Rockwell
A very controversial site, Ken Rockwell is publishing his own reviews and comments about mainly Nikon related products (he recently announced to intend to look at the "other side" (Canon)) and many people do not take his conclusions too seriously. He is drawing conclusions about equipment he did not really use (a lot). That makes some of his conclusions a bit doubtful to certain people. On the other hand, he has quite a lot of common sense and there is a lot of intelligent and useful stuff on his site. Up to you to see if you find it worth visiting, I found it worth mentioning here. Personally, I like his no-nonsense approach and even if some pro might not agree with him, I really think his conclusions are true most of the time, even if a bit controversial.
• Thom Hogan
An interesting site. Lots of useful information. Thom Hogan publishes books and e-books which are a nice complement to the official documentation. 
• SLR gear reviews
Lots of useful stuff if you are in a buying mood. Check this site for reviews about camera's, lenses...  
• Earthbound-light site 
Excellent photography tutorials - a lot of very useful infos there. One of my favorites. A new tutorial is published every week.  
• Cambridge in colour 
Excellent photography tutorials - a lot of very useful infos there. Fantastic quality information.  

  Accessories, shops, interesting products, various

• Nikon accessories (lens caps, plastic parts...)
  very interesting resources for the Nikon fan - all the things you need and you often lose...
• Nikon repair manuals (SLRs)
  a fabulous resource site for those interested in repairing or understanding old camera's
• Nikon Parts and Diagrams (SLRs)
  a fabulous resource site for those interested in repairing or understanding P&S, DSLR, SLR cameras and a few lenses