UCL-90 XD Close-up Lens
Outer diameter	φ77.9 mm/3.1 in.
Length	36.4 mm/1.4 in.
Weight	[Underwater] approx. 228 g/8.0 oz [Air] 343 g/12.1 oz
Lens mount	INON XD Mount
Construction	3 groups 2 elements
Focal length [underwater]**	90 mm (equivalent to +11 diopter)
Magnification***	2.23x（area ratio:4.98x）
Body material/finishing	Corrosion-resistant aluminum alloy /rigit black almite, POM etc
Lens material/finishing	Optical glass/both side coating
Depth rating	60 m (197 ft)

*Specification is subject to change without prior notice
**Focal length of lens itself and not combined focal length with camera's master lens.
***With AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED at the minimum focusing distance.