I currently shoot with a L18 that came in the Ikelite kit with an AF35. The Lxx series cameras are about as simple as a point and shoot can possibly get. The cameras have no ability to shoot in raw and no ability for the user to select apeture or shutter speed. The Ikelite kit is very inexpensive and you can get very good pictures with it. Focus is OK, you'll learn to half press the shutter and move the camera to get good focus on macro. Focus speed and shutter delay are both fairly good for a point and shoot but if you shoot above water with a good dSLR like I do you'll hate the response times. If you've got experience with above water photography you may find yourself frustrated with the inability to set apeture and shutter speed but after a thousand shots or so I find myself having a pretty good idea of what the camera is going to decide and composing around that. I have had some issues with fogging of the housing but if you use a desicant pack in the housing you should be fine....