The Canon Eb eyecup is supplied with many of their SLR cameras as standard equipment, providing effective cushioning and shielding of stray light.
Compatiblity
EOS 10D
EOS 20D
EOS 20Da
EOS 30D
EOS 40D
EOS 50D
EOS 5D
EOS 5D Mark II
EOS 60D
EOS 70D
EOS 80D
EOS D30
EOS D60
EOS Digital Rebel
EOS ELAN II
EOS ELAN IIE
EOS Rebel 2000
EOS Rebel G
EOS Rebel G II
EOS Rebel K2
EOS Rebel TI
EOS Rebel X
EOS 20D
EOS 20Da
EOS 30D
EOS 40D
EOS 50D
EOS 5D
EOS 5D Mark II
EOS 60D
EOS 70D
EOS 80D
EOS D30
EOS D60
EOS Digital Rebel
EOS ELAN II
EOS ELAN IIE
EOS Rebel 2000
EOS Rebel G
EOS Rebel G II
EOS Rebel K2
EOS Rebel TI
EOS Rebel X