Thanx to the two UV coated lenses and anti-reflection, those lenses restore a distorted image to a perfect one.
Sharper pictures with same magnification

Can be used with most of the cameras in wide angle position or full range zoom

+7 - 165mm

M77 mount (male/female)

Delivered with step ring M67

Specifications: 

• Depth rated: 100 meters
• Material: Optical glass - Aluminum
• Weight: 170 g
• Warranty: 2 years