Select camera models including the Sony Cyber-shot RX100 III/IV and Canon PowerShot G7 X have two different housing options available: an "Underwater Housing" and an "Action Housing". Each version has its own distinct advantages.

Scale
Depth rating	Both models: Fully scuba and free diving rated to 200ft/60m
Primary uses	Water sports Surfing Scuba and free diving Outdoor activities	Scuba and free diving
Controls	Shutter Video start/stop Zoom Power on/off Menu Playback	Shutter Video start/stop Zoom Power on/off Menu Playback Dial controls
Recommended exposure modes	Program Aperture priority Shutter priority Auto	Manual Aperture priority Shutter priority
Wide angle options	Both models: Optional WD-3 Wide Angle Dome Wide angle wet lenses with 67mm threads
Lighting options	Constant-on Video light Fluorescence	Constant-on External strobe Video light Fluorescence
Bottom tray mounting	Central 1/4-20 tripod	Two 1/4-20 mounts with 3 inch (76 mm) spacing
Camera installation	Drop-in	Front loading tripod mount
Buoyancy	Slightly positive	Slightly negative
Construction	ABS-PC blend	Polycarbonate front Acrylic back Stainless steel latches
Average size	6 x 4.5 x 4.5 inches 152 x 115 x 115 mm	6.5 x 4.5 x 5.5 inches 165 x 115 x 140 mm
Average weight	17 oz (500g)	40 oz (1100g)
Average price (US market)	$299	$550

Originally published at www.ikelite.com