EG Eyecup EG for Canon EOS 1Ds Mark III, 7D, 1D Mark IV 1D Mark III Eyepiece EG
1 piece of Eyecup. Canon EOS 7D, 7D Mark II. Canon EOS 1DX, 1D Mark III, 1D Mark IV. Attaches to the viewfinder eyepiece minimizing extraneous light and vision fatigue. Canon EOS 5D Mark III. You can even view it with your glasses on.