■ Lens System Compatibility with TG-5 / PT-058 (*1) ■
By attaching INON "Step-up Ring 52-67" on the PT-058, below listed INON attachment lenses are usable. (*4)

•Step-up Ring 52-67
Step-up Ring 52-67 and PT-058

For wide imaging, INON "UWL-H100 28M67 Type2" (*5)(*6) is compatible and its super dome option "Dome Lens Unit II for UWL-H100" (*5) further increases to shoot semi-fisheye imaging. 

•UWL-H100 28M67 Type2 Wide Conversion Lens (*5)(*6)

•Dome Lens Unit II for UWL-H100 (*5)


Also INON underwater micro fisheye lens "UFL-M150 ZM80" (*7) is compatible to capture underwater world through a view of a tiny fish to create unique image only by this lens.
•UFL-M150 ZM80 Underwater Micro Fisheye Lens (*7)


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(*4)
Close-up lenses are not compatible as the Olympus TG-5 offers advanced [Microscope mode] for high magnification photography at zoom telephoto end without any attachment lenses.
(*5)
Only usable when camera’s focal length(zoom position) is set to 28mm (35mm film equivalent) like when selecting conversion lens "PTWC-01" in accessory setting via Live Control. The "UWL-H100 28M67 Type2" (and combination with "Dome Lens Unit II for UWL-H100") is designed to deliver optimal image quality when camera’s focal length is set to 28mm (35mm film equivalent). 
(*6) 
Using on land with zoom wide end will have vignetting. Crop an image after shooting or slightly zoom to telephoto side. 
(*7) 
Optional "M27-M67 Mount Converter for UFL-M150 ZM80" is required.