Gates FP25 Flat Port

The Gates FP25 Flat Port contains a single, flat, uncorrected element. The field of view becomes narrowed underwater, subject to the same refraction as a diver looking through a facemask. This Port allows full camera zoom capability, and diopters may be used to increase the magnification of a macro subject. +1, +2 and +4 are commonly used. This Port is forgiving to minor bumps and handling, and it is field replaceable.