In my opinion as an engineer working for a major airline and a PPL/student ATPL. I don't see a problem as long as you don't go taking photos of military controlled airports if you fly into them, and comply with the rules on using electronics. I realise it's not quite the same, but many of my friends take photos when we go flying in a light aircraft. I would suggest that you shouldn't have these large SLR cameras because of the projectile issue, but small cameras, I really don't see the fuss.
To quote GK430 who said:-
The hypocrisy about photography is ridiculous; how many airport duty free's sell cameras - but don't take a photo here once you paid for it
My response:-
Ok, maybe you have a point, but many airport departure lounges have a chemists which sell condoms, need I say any more?!?!?
