The Think Tank EP-C7D eyepiece is required to use any Hydrophobia rain cover with the Canon 7D, 5D Mark III and 1DX DSLR cameras.

Compatible with the Hydrophobia 300-600 V2.0, Hydrophobia 70-200 and Hydrophobia Flash 70-200 rain covers.

Compatible Hydrophobia Rain Covers:
Hydrophobia 300-600 V2.0
Hydrophobia 70-200
Hydrophobia Flash 70-200

Compatible Canon DSLR Cameras:
EOS 5D Mark III
EOS 7D
EOS 1Dx