100% compatible for Canon EOS 10D EOS 20D EOS 30D EOS 40D EOS 50D EOS 5D EOS 5D Mark II EOS 60D EOS 6D EOS 70D EOS 80D. Canon EOS 50D, EOS 80D, EOS 40D, EOS 30D. They also play an important role inpreventing any stray light from entering the viewfinder whilst you’re looking down it.
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