Comments about Ewa-Marine Ewa-marine Underwater Camera Housing U-AX f/ AF SLR Cameras w/ a Top Mounted Flash - E133:
This is a great sturdy bag that I would take underwater anytime - on auto mode that is. The biggest drawback is that you really cannot turn the rings on your lens: 'very little' with bare dry hands and 'not at all' underwater (wet hands or scuba gloves on). I actually read before I bought it, that the lens part of the bag ROTATES with the lens - not true, the bag is one piece. It extends great!
All other controls on the camera are very hard to operate.
I like using my camera on Manual, so this is a big inconvenience for me.
However I rather use my camera on auto, in this bag, then a underwater compact camera.
The fit is not snug at all, if that is an issue for you, for me it seems harder to operate the camera with all the loose material around it.
The little screen on the back doesn't match the camera display, so it's rather in the way.
Another problem I have with it, is the closure system: it seems great but there is no backup. I think it should be a secondary fold or ziplock type closure, just in case.
A bit pricey.
Now the pros: It accommodates the flash which is really a lifesaver in the harsh direct light of a pool, or in the low-light situations of scuba diving.
The lens front seems wide (plenty for a 67) and clear enough, assuming there are no scratches.
I have not tested it at the maximum depth yet.
If I were to change anything,
-I'd l-o-v-e to see the lens compartment actually rotate along with your lens;
-back-up secondary closure system;
-maybe have a finger compartment (or maybe extra texture on the inside, for easier controlling exposure etc. (unfortunately it has to be camera-specific);
-no screen on the back OR a bigger one;
-better buoyancy compensation;
All in all, a pretty good alternative for a must-have uw casing.