The Anti-Fog eyepiece uses specially treated advanced-process glass, which prevents condensation or fogging. Designed for use in warm and humid or cold weather, when fogging is most likely to occur.
Note! Not for EOS-1D Mark III series.
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Comments about Canon EC (Anti-Fog) Eyepiece:
I lost my original eyepiece and needed a new one. Since I photograph a lot in weather were mye eyepiece fogs I bought this instead. Haven't tested it in "foggy" conditions yet.
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