Hydrophobia® Eyepieces
Waterproof eyepiece required for use with Think Tank Photo Hydrophobia rain covers.
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Hydrophobia Eyepiece for Nikon
It is solid, robust, locks in place, and works well with the cover. Oh, and people who see it for the first time keep asking what this thing is. Definitely a must have if you also own the rain cover.

A Really Nice Improvement
I photographed my first Elk in Yellowstone using the original rain cover for a 600mm lens. When i took the shot, it was misting at first, then began to rain lightly. My equipment was never in danger of getting wet. A great product made even better. Thank you Think Tank. George Ligon

Another quality item from the ThinkTank crew
I already had the necessary eye pieces to fit my Nikon D750 so when I purchased a D850 and D4s I needed the different connection type. No hesitation to get this. The rain covers for the 70-200 and 300mm lenses are top quality and beat anything else I have tried to keep out the rain.

