Underwater Close-up Lens
Underwater Close-up Lens
[ZD Mount]
UCL-G55 ZD Underwater Close-up Lens
JAN/EAN code : 4570018120978
*The packaged Focus Stick is designed for GoPro® cameras.
Bayonet INON ZD Mount compatible to support friendly and speedy lens exchange underwater. Optional INON ZD Lens Holder can hold the UCL-G55 ZD when the lens is not in use.
The unprecedented high-magnification close-up lens with packaged useful Focus Stick enables you to easily enjoy blur-free macro photography.
Compatible Front Mask
- ZD Front Mask for HERO12
- ZD Front Mask for Ace Pro
The unprecedented high-magnification close-up lens with packaged useful Focus Stick enables you to easily enjoy blur-free macro photography.
Compatible Front Mask
- ZD Front Mask for HERO12
- ZD Front Mask for Ace Pro
[SD Mount]
UCL-G55 SD Underwater Close-up Lens
JAN/EAN code : 4570018120886
Bayonet INON SD Mount compatible to support friendly and speedy lens exchange underwater. Optional INON AD Lens Holder can hold the UCL-G55 SD when the lens is not in use.
The unprecedented high-magnification close-up lens with packaged useful Focus Stick enables you to easily enjoy blur-free macro photography.
Compatible Front Mask
- SD Front Mask for HERO9
- SD Front Mask for HERO8
- SD Front Mask for HERO5/6/7
- SD Front Mask STD
- SD Mount Cage for HERO3/3+/4
Bayonet INON SD Mount compatible to support friendly and speedy lens exchange underwater. Optional INON AD Lens Holder can hold the UCL-G55 SD when the lens is not in use.
The unprecedented high-magnification close-up lens with packaged useful Focus Stick enables you to easily enjoy blur-free macro photography.
Compatible Front Mask
- SD Front Mask for HERO9
- SD Front Mask for HERO8
- SD Front Mask for HERO5/6/7
- SD Front Mask STD
- SD Mount Cage for HERO3/3+/4
Features
Highest Magnification Close-up Lens
The UCL-G55 offers the highest magnification among the UCL-G series close-up lenses. The lens provides 4x magnification (scale ratio) compared to the UCL-G165II.
The lens is specially designed for shooting tiny critters, enabling ultra-macro photography with GoPro cameras.
*Depth of field gets shallower with higher magnification due to the nature of close-up lenses.
*The UCL-G55 provides ultra-high magnification, so using a tripod is recommended to prevent handshake.


Change FOV Setting for Further Magnification
The distance between two sticks represents a shooting range of the UCL-G55 when GoPro® is set to "WIDE". GoPro® cameras have several FOV. settings. By using "Linear" or other narrower FOV. setting.it is possible to shoot at an even higher magnification. Shooting at a high resolution such as 4K with "1.4x" zoom can enlarge the subject even more with relatively less image quality degradation.

Blur-free Focus Stick (PAT.P)
The distance between two sticks represents a shooting range of the UCL-G55 when GoPro® is set to "WIDE". The Focus Stick for UCL-G55 has two protrusions representing minimum focusing distance with protrusions at camera side and far end of the depth of field with the far side protrusions (tip).
It is easy to take sharp and crispy high magnification close-up video by referring to the Focus Stick and checking the composition on the rear monitor.
The Focus Stick rotates 360° and has clicks every 90°, so it can be instantly flipped up when not in use. Vertical installation is also possible. The Focus Stick body is attached to the lens with retaining screw ring and can be separated from the lens when not necessary.

The distance between two sticks represents a shooting range of the UCL-G55 when GoPro® is set to "WIDE". The Focus Stick for UCL-G55 has two protrusions representing minimum focusing distance with protrusions at camera side and far end of the depth of field with the far side protrusions (tip).
It is easy to take sharp and crispy high magnification close-up video by referring to the Focus Stick and checking the composition on the rear monitor.
The Focus Stick rotates 360° and has clicks every 90°, so it can be instantly flipped up when not in use. Vertical installation is also possible. The Focus Stick body is attached to the lens with retaining screw ring and can be separated from the lens when not necessary.


Compatible Accessories
Front Replacement Lens Cap
UCL-G55 ZD
UCL-G55 SD

Front Replacement Lens Cap
Accessories : Focus Stick for UCL-G55

Rear Replacement Lens Cap
UCL-G55 ZD

Rear Replacement Lens Cap
UCL-G55 SD

Front Replacement Lens Cap
UCL-G55 ZD
UCL-G55 SD

Front Replacement Lens Cap
Accessories : Focus Stick for UCL-G55

Rear Replacement Lens Cap
UCL-G55 ZD

Rear Replacement Lens Cap
UCL-G55 SD

Options
ZD Lens Holder M5
UCL-G55 ZD

ZD Lens Holder S
UCL-G55 ZD

AD Lens Holder for Float Arm
UCL-G55 SD

AD Lens Holder
UCL-G55 SD

AD Lens Holder Shoe Base
UCL-G55 SD

ZD Male Bayonet for SD Lens
UCL-G55 SD

Specifications
UCL-G55 ZD | UCL-G55 SD | |
Size | Lens: 77mm/3.0in [diameter] 25.2mm/1.0in [length] With Focus Stick: W121xH91xD87mm/W4.8xH3.6xD3.4in [Focus Stick extended] W121xH120xD28mm/W4.8xH4.7xD1.1in [Focus Stick folded] |
Lens: 77mm/3.0in [diameter] 25.2mm/1.0in [length] With Focus Stick: W121xH91xD87mm/W4.8xH3.6xD3.4in [Focus Stick extended] W121xH120xD28mm/W4.8xH4.7xD1.1in [Focus Stick folded] |
Weight | 189g/6.6oz [lens standalone, air] 45.4g/1.6oz [Focus Stick standalone, air] 119g/4.2oz [with Focus Stick, underwater] |
184g/6.5oz [lens standalone, air] 45.4g/1.6oz [Focus Stick standalone, air] 116g/4.1oz [with Focus Stick, underwater] |
Mount system | INON ZD Mount | INON SD Mount |
Depth rating | 60m / 196.9ft | |
Body material /finishing |
Corrosion resistant aluminum alloy rigid black alumite, PC etc. |
|
Lens material /coating |
Optical glass/both side coating, | |
Lens construction | 2 groups 3 elements | |
View angle | Approx. 45°[underwater] | |
Depth of field(*1) | 4.8cm / 1.9in to 6.2cm / 2.4in | |
Compatible camera | HERO4 and later | |
Remarks | Compatible INON “ZD Front Mask” is required to use the attachment lens. | Compatible INON “SD Front Mask” is required to use the attachment lens. |
UCL-G55 ZD | UCL-G55 SD | |
Size | Lens: 77mm/3.0in [diameter] 25.2mm/1.0in [length] With Focus Stick: W121xH91xD87mm/W4.8xH3.6xD3.4in [Focus Stick extended] W121xH120xD28mm/W4.8xH4.7xD1.1in [Focus Stick folded] |
Lens: 77mm/3.0in [diameter] 25.2mm/1.0in [length] With Focus Stick: W121xH91xD87mm/W4.8xH3.6xD3.4in [Focus Stick extended] W121xH120xD28mm/W4.8xH4.7xD1.1in [Focus Stick folded] |
Weight | 189g/6.6oz [lens standalone, air] 45.4g/1.6oz [Focus Stick standalone, air] 119g/4.2oz [with Focus Stick, underwater] |
184g/6.5oz [lens standalone, air] 45.4g/1.6oz [Focus Stick standalone, air] 116g/4.1oz [with Focus Stick, underwater] |
Mount system | INON ZD Mount | INON SD Mount |
Depth rating | 60m / 196.9ft | |
Body material /finishing |
Corrosion resistant aluminum alloy rigid black alumite, PC etc. |
|
Lens material /coating |
Optical glass/both side coating, | |
Lens construction | 2 groups 3 elements | |
View angle | Approx. 45°[underwater] | |
Depth of field(*1) | 4.8cm / 1.9in to 6.2cm / 2.4in | |
Compatible camera | HERO4 and later | |
Remarks | Compatible INON “ZD Front Mask” is required to use the attachment lens. | Compatible INON “SD Front Mask” is required to use the attachment lens. |
(*1) Measured DoF from foreground of the lens surface. Divide by 1.33 for visual distance underwater.
Remarks
[When using the UCL-G55]
The UCL-G55 is designed only for underwater use. Using on land creates vignetting.
[When using for GoPro]
Set the camera's field of view (FOV)/Digital Lenses to [Wide] for quality-oriented, or [Linear] for magnification-oriented photography.
When using with HERO11 Black, HERO12 Black and HERO13 Black, shoot in 4:3 or 16:9 aspect ratio as vignetting will occur in 8:7 or [HyperView™] mode which compresses footage in 16:9 aspect ratio by using the full 8:7 sensor.
[SuperView™] mode is not recommended. The SuperView™ mode stretches both ends of the image inside the camera to fit into a 16:9 aspect ratio from originally obtained 4:3 aspect ratio image by the camera sensor. Since the edges of the frame are stretched horizontally, using an attachment lens further stretches the edges of the frame, resulting in an unnatural image.
Set the camera's image stabilization (HyperSmooth) to [Standard], [High], or [On]. Setting to [Off] will cause vignetting in image corners, and [Boost] will crop the image significantly.
The FOV/Digital Lenses setting [Wide] in Photo mode causes vignetting in image corners.
Sample Movie
*GoPro and HERO are trademarks or registered trademarks of GoPro Inc.
*Insta360 is a trademark or registered trademark of Arashi Vison Inc.
*Specifications are subject to change without notice.