If you want more options like a dslr, you can also add conversion lenses to the G11 giving it more options, like a wide angle lenses, macro len, and Teleconverter giving you more range.
The FIX G11 housing accepts macro but no wide angle wet lenses. It does have an excellent dry port ultra wide angle.
The Ikelite G11 case has an optional bubble corrector that produces about 70 degree FOV and also accepts some macro options.
The Patima G11 housing does seem to accept some wet lenses but wide angle, maybe yes?
The Canon G11 housing can accept some macro lenses but no wide angle lenses. Fantasea bubble lens?
The FIX S90 housing accepts virtually all wide angle/ultra wide angle 52/67 threaded, AD, 28AD, ST wet lenses as well as a variety of macro threaded and bayonet lenses.
The Ikelite S90 housing seems to work acceptably (reportedly) with some threaded wide angle and macro wet lenses.
The Canon S90 housing has macro options but no wide angle options. Fantasea bubble lens?
Since both of these cameras are new, especially the S90, some of this is still developing as we speak.
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