This is a joke. The viewing window through this eyecup is much smaller than the camera's viewfinder. Not a full review. Second, it took less than a week because the eyecup is so easy to put on and take off that if you don't pay 100% attention to it and the camera hits your shirt, it disappears. The second time it's gone forever and so there's nothing to return to return your money for a bad product. A small set screw or large rubber backed plastic hood to hold the back of the camera as if the Canon product would stay in place, would work. Cheaply made and I might as well light up a 3 5 and I'd be happier about it.
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