Attach the Hoodman HoodEYE Eyecup and upgrade your camera's eyepiece in seconds
 
The HoodEYE improves your viewfinder's clarity by preventing ambient light from entering your eyepiece.

The HoodEYE is self-locking, and accommodates both left-eye and right-eye shooters.
 
HoodEYEs fit all Canon and Nikon DSLRs with the following models:
 
Canon 22mm fits 1D MarkIII, 1Ds MarkIII, 1D MarkIV, 7D, 5D Mark III, 1D-X
Canon 18mmL fits 5D & 5D MarkII, Rebel T3 / 1100D
Canon 18mm fits all other Canon models
 
Nikon Round fits D3, D3s, D3x, D4, D700, D2, D2x, D1, D800
Nikon Square fits all other Nikon models
 
See chart below for detailed listings.
 
If you wear glasses, make sure and check out the HoodEYE Eyecup for use with glasses.