Brands Guides About
Think Tank 006449 Hydrophobia Eyepieces Sony Nikon Canon Olympus — main product image
Think Tank

Think Tank 006449 Hydrophobia Eyepieces Sony Nikon Canon Olympus

★★★★★4.4 (69 reviews)

A precision-machined Delrin eyepiece that seals your viewfinder against rain when paired with Think Tank's Hydrophobia cover.

$24.75*
✓ In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The Think Tank Photo Hydrophobia Eyepiece (EP-15) is a purpose-built viewfinder accessory designed to create a waterproof seal between the photographer's eye and the camera when used in conjunction with Think Tank's Hydrophobia rain cover system. The eyepiece body is CNC machined from Delrin, an engineering-grade polymer chosen for its dimensional precision, resistance to moisture, and mechanical durability. Lined with high-density foam padding, it conforms to the face to block both water intrusion and stray light from entering the viewfinder during use.

Weighing just 0.64 ounces and measuring 3.4 x 3 x 0.5 inches, the eyepiece adds negligible weight and bulk to your camera. It is compatible with Sony, Nikon, Canon, Fuji, and Olympus cameras, and installs without tools over the existing viewfinder mount. While its primary role is to complete the weather seal when using a Hydrophobia rain cover, Think Tank designed it to remain on the camera as a permanent eyepiece upgrade, providing a more comfortable and padded viewing experience for everyday shooting as well.

Key Features

Fits Sony, Nikon, Canon, Fuji and Olympus cameras

CNC machined Delrin eyepiece with high density foam padding

Easy to install

Required for use with the Hydrophobia Rain Cover

Can be left on the camera for use without a rain cover

Specifications

Brand
Think Tank Photo
Model
006449 (EP-15)
Material
CNC machined Delrin with high-density foam padding
Compatibility
Sony, Nikon, Canon, Fuji, Olympus cameras
Product Dimensions
3.4 x 3 x 0.5 inches
Item Weight
0.64 ounces
Installation
Tool-free, easy install

Pros & Cons

👍 Pros

  • CNC machined Delrin construction provides precise, consistent dimensions and long-term durability.
  • High-density foam padding creates a comfortable seal that blocks rain and light leaks at the viewfinder.
  • Compatible across five major camera brands, making it versatile for multi-system photographers.
  • Compact and lightweight at just 0.64 ounces, adding virtually no bulk to your camera setup.
  • Can be left on the camera permanently for everyday use, not just rain cover situations.

👎 Cons

  • Only useful for viewfinder-equipped cameras and has no application for mirrorless bodies used exclusively with electronic viewfinders that lack a standard eyepiece mount.
  • Requires separate purchase of the Hydrophobia rain cover to function as a weather seal system.
  • Compatibility should be verified per specific camera model, as not every body from supported brands may fit.

Frequently Asked Questions

While it is designed as a companion to the Hydrophobia rain cover, the eyepiece can be left on your camera permanently and used on its own as a comfortable, padded viewfinder eyepiece even without the rain cover attached.
It is compatible with Sony, Nikon, Canon, Fuji, and Olympus cameras. Check Think Tank's compatibility list for your specific camera model.
It is designed for easy installation and fits over your camera's existing viewfinder eyepiece mount. No tools are required.
The eyepiece body is CNC machined from Delrin, an engineering-grade acetal resin known for its dimensional stability and durability, lined with high-density foam padding for a comfortable and weather-resistant seal against your face.

Related Products