I have a Sigma 8-16 with HSM focus motor, and it is awesome for wide angle, next purchase will be an 85 mm prime Nikon lens with focus motor and vr for macro, I have the 8" dome port and a flat port for the kit lens right now
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I'm use D5200 with ikelite housing and Sigma 10 mm Fisheye. Both work well including auto focus, except when you used live-view it is very clumsy and can't focus anything. Here are pictures I took from D5200 & Sigma 10 mm Fisheye.