The AOI 24mm Extension Ring increases the length of DLP-05 and DLP-06 lens ports by 24mm to accommodate the Olympus 8mm f/1.8 fisheye lens onto a housing. It is compatible with select Olympus PEN-style underwater housings from AOI.

Olympus 8mm f/1.8 fisheye lens

AOI DLP-05 and DLP-06 dome ports

AOI PT-EP01, PT-EP03, PT-EP05, PT-EP05L, PT-EP06, PT-EP06L, PT-EP10, and PT-EP13 underwater housings

Related Questions and Answers

Q: 1. Would this adapter be used Olympus OM lens (not 3/4 OM lens) to Pentax K-Mount cameras? and my camera is Pentax K7. Thanks.

A: The Olympus OM lens mount is Olympus' older manual-focus only lens mount. The Olympus Four Thirds lens mount is Olympus' DSLR autofocus lens mount (the current mirrorless cameras use the Micro Four Thirds lens mount). The Olympus OM Pro Lens Adapter for Pentax K-Mount Cameras listed above is designed to attach the older Olympus manual focus only OM-mount lenses onto the Pentax K-mount cameras, such as the Pentax K-7 DSLR camera.

Q: 2. What's the net weight of this adapter?

A: Is Yves is lazy? Or stupid? This information is readily available on line. For instance, Amazon says 4oz. Probably the Olympus website gives the answer too. I am not going to weigh my adapter on a gram scale for Yves' benefit. Get a life, Yves! B&H, please do not send me questions of this sort in the future. Thanks.

Q: 3. The original M52 from backscatter comes with fiber optic cable adapter. Is it included in the box?

A: Yes, the Backscatter M52 Wide-Angle Air Lens for Olympus PT Series Underwater Housings comes with the Fiber Optic Cable Adapter.

Q: 4. Vintage Olympus OM 35mm film camera lenses? Or modern MFT Olympus lenses?

A: This adapter is for use with older OM film camera lenses.

Q: 5. Will putting a micro 4/3 lens on the z6 crop the image similar to putting a DX lens on a full frame body?

A: No, Micro 4/3 cameras have a 2x crop factor and Nikon DX cameras have a 1.5x crop factor. You will have a longer focal length when you attach a Micro 4/3 lens.

Q: 6. Does this adapter impart any magnification factor to the Olympus lens? Some adapters do. The description doesn't say.

A: The Olympus OM series lenses were used on the Olympus OM series 35mm SLR cameras. A full frame sensor is modeled after a 35mm film frame, so using this adapter on the Nikon Z6/Z7 will keep the focal length of the OM lens the same. If using the OM lenses with the adapter on the Z50, which has the DX sensor, then a crop factor of 1.5X will be applied to the focal length.

Q: 7. I assume this doesn’t support autofocus?

A: The LA-NZ-OM lens Adapter does not support autofocus.

Q: 8. I am using the Olympus TG5 PT 058 housing. Is it possible to attach it without an adapter?

A: Yes, the Backscatter M52 Wide-Angle Air Lens for Olympus PT Series Underwater Housings fits the Olympus PT-058 housing without the need of an adapter.

Q: 9. can this be used with the Olympus air?

A: As I do not own and have not used an Olympus Air so far, I cannot give a definite yes or no answer to this question. Yet, I can tell you that this adapter will physically fit on the Olympus AIR as it features a standard Micro Four Thirds lens mount, and it will allow you to mount older Olympus OM lenses at the right focal distance. However, as you are probably aware, autofocus is not possible with these older lenses and only manual or aperture priority exposure will be possible with this setup. I have successfully used this adapter on OM EM-1 and EM-5 MarkII bodies, but not on the Olympus Air. Functionality will likely depends on the versatility of the built-in Wi-Fi and Bluetooth operations. The only way to be sure is to test it.

Q: 10. Do you have to Burp it underwater?

A: The Backscatter No Burp O-rings (BS-M52-o-rings) are not compatible with the Backscatter M52 Air Lens. They are used with the BS-UWL-M52 Wide Angle Conversion Lens. The Backscatter M52 Wide-Angle Air Lens for Olympus PT Series Underwater Housings BH #BABSM52AIR, as with any wet mount lens, it is always a good idea to burp it once you have gotten into the water. The Backscatter M52 Wide Angle Air lens is no exception to that. The Air Lens does have larger cutouts on the back plate that does allow water to flow through very easily which in some cases make it unnecessary to burp the lens. With the lens attached to the camera housing, once you re in the water you can shake the camera housing with lens attached, and that should blow off any air bubbles that may have formed on the lens or the housing. The Backscatter No Burp O-rings (BS-M52-o-rings) are not compatible with the Backscatter M52 Air Lens. They are used with the BS-UWL-M52 Wide Angle Conversion Lens.