INON UCL-G55 ZD Underwater Close-up Lens

The Inon UCL-G55 SD offers the highest magnification among the UCL-G series close-up lenses. The lens provides 4x magnification (scale ratio) compared to the UCL-G165II SD. 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 SD 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 SD 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.

https://youtu.be/vyTGbgEPccU?feature=shared

Blur-free Focus Stick (PAT.P)

The distance between two sticks represents a shooting range of the UCL-G55 SD when GoPro® is set to "WIDE". The Focus Stick for UCL-G55 SD 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.

Model UCL-G55 SD

SizeLens:

77mm / 3.0in (diameter)
 25.2mm / 1.0in (length)

With Focus Stick:

 W121 x H 91 x D87mm / W4.8 x H3.6 x D3.4in [Focus Stick extended]
 W121 x H120 x D28mm / W4.8 x H4.7 x D1.1in [Focus Stick folded]

Weight:

184g / 6.5oz (lens standalone, air)
45.4g / 1.6oz (Focus Stick standalone, air)
116g / 4.1oz (with Focus Stick, underwater)

Mount system

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 (underwater）

Approx. 45°

Depth of field (Measured DoF from foreground of the lens surface. Divide by 1.33 for visual distance underwater.)

4.8cm / 1.9in to 6.2cm / 2.4in

Compatible camera

HERO4 and later

Remarks

Compatible INON “SD Front Mask” is required to use the attachment lens.