If you want to use your action camera with Inon’s latest wet lenses—the UFL-GR140 ZD/UFL-GR140 Pro ZD and UFL-G140 ZD semi-fisheye lenses, and the UCL-G55 ZD, UCL-G100 ZD and UCL-G165II ZD close-up lenses—you’ll need their latest ZD Front Mask, which attaches to your action cam’s waterproof case.
There’s already an ZD Front Mask for GoPro HERO9–13. Now, Inon has introduced ZD Front Masks for the Insta360 Ace Pro 2 and DJI Osmo Action 5 Pro. If you prefer a pistol grip, Inon will soon be releasing the 4D Light Grip, which can be used with the ZD Front Masks for GoPro, Insta360, and DJI action cameras.
The new ZD Front Masks are available now, while the 4D Light Grip is arriving in September. Consult your Inon dealer for pricing.
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PRESS RELEASE
INON INC. releases two new ZD Front Mask on August 5, 2025: the ZD Front Mask for Ace Pro 2, designed to fit the official Dive Case for Insta360 Ace Pro 2, and the ZD Front Mask for Osmo Action 5 Pro, made specifically for the official Osmo Action 60m Waterproof Case.
Attaching the INON ZD Front Mask allows the use of the underwater semi-fisheye conversion lens UFL-GR140 ZD (*1) which can deliver wide and quality view with its large-aperture optics across more wide-angle FOV settings on Ace Pro 2 and Osmo Action 5 Pro, as well as the compact UFL-G140 ZD.*
Also, the wide variety of INON close-up lenses (UCL-G165ll ZD, UCL-G100 ZD, UCL-G55 ZD) (*2) now allows Ace Pro 2 and Osmo Action 5 Pro users to enjoy macro imaging that wouldn’t be possible with the camera alone.
INON also releases the 4D Light Grip in late September, which can be mounted onto the housings of various action cameras. This highly versatile grip allows users to attach both an action camera and a light at the same time.
(*1) Lens hoods included with UFL-GR140 ZD shipped before Augst 5, 2025 may be visible in footage. Please use the updated “Lens Hood II (for UFL-GR140)” which is available for separate purchase.
(*2) UCL-G100 and UCL-G55 shipped on or after August 5, 2025 will come with newly designed Focus Stick that helps prevent interference when used with Ace Pro 2 and Osmo Action 5 Pro. For existing UCL-G100/UCL-G55 users, updated Focus Stick II is available for purchase to replace the original Focus Stick.
ZD Front Mask for Ace Pro 2
Released date: August 5, 2025
JAN/EAN: 4570018121203
ZD Front Mask for Osmo Action 5 Pro
Released date: August 5, 2025
JAN/EAN: 4570018121210
| Model |
ZD Front Mask for Ace Pro 2 |
ZD Front Mask for Osmo Action 5 Pro |
| Compatible housing |
Insta360 Ace Pro Dive Case |
DJI Osmo Action 60m Waterproof Case |
| Mount |
INON ZD Mount |
| Compatible lenses |
UFL-GR140 ZD/UFL-GR140 Pro ZD
UFL-G140 ZD
UCL-G55 ZD
UCL-G100 ZD
UCL-G165II ZD |
Size
(excl. handle) |
82.0 mm/3.2 inch (W) ×
98.0 mm/3.9 inch (H) ×
41.0mm/1.6 inch (D) |
82.0 mm/3.2 inch (W) ×
98.0 mm/3.9 inch (H) ×
34.0mm/1.3 inch (D) |
Weight
(incl. handle) |
Air: approx. 60g/2.1oz, underwater approx. 25g/0.9oz |
| Material |
PC, POM, etc. |
| Accessory |
Male Adapter (GP) |
| Compatibility* |
Please see attached PDF |
|
| Remarks |
Third party housings are not supported |
Third party housings are not supported
Compatibility with Osmo Action 3/4 has not been confirmed* |
*The compatibility information is for reference only as the lens hood or Focus Stick may interfere when the camera moves violently.
ZD Front Mask for Ace Pro 2 Grip Set
To be released: September 2025
JAN/EAN: 4570018121234
ZD Front Mask for Osmo Action 5 Pro Grip Set
To be released: September 2025
JAN/EAN: 4570018121241
4D Light Grip
To be released: September 2025
JAN/EAN: 4570018121258
