to be honest --- too many clicks to get to where i want to go.
your audience should be able to get to where they want in a single click, 2 max...
front page doesnt do it for me -- go straight to the home page i wreckon.
navigations are images -- google wont be able to index and crawl the site very well.. i'd use links instead...
too much of the same "grey", try using a slightly lighter grey on the inner frame - may just add that touch of contrast..
overall i think the design and the concept behind it is good. just need some more info about the photographer.. =D
btw : your photography work are stunning. like whats prev been mentioned, preview pictures would be better larger..
I've prev worked as a web developer, n hopefully my inputs are not too blunt... if you need any info in website development - dont hesitate to pm me, I'll help out where I can... =D