The Canon Anti-Fog Eyepiece EG is a must-have accessory for photographers using Canon EOS-1D X, 1D Mark IV, 5DS, 5DS R, 5D Mark IV, 5D Mark III, 7D Mark II, 7D, and 70D DSLRs. This eyepiece helps prevent fogging on the viewfinder during shooting in challenging weather conditions, ensuring clear visibility and improving overall image quality. Designed by Canon specifically for their line of DSLRs, this eyepiece is easy to install and provides a snug fit for optimal performance. Enhance your photography experience with the Canon Anti-Fog Eyepiece EG, compatible with Canon EOS-1D X.