Very good, but only with modification

- Apply the adhesive completely remove the frame with alcohol or similar, and double-sided tape attach.
Cut off and ensure that the adhesive is completely flush the excess glue. Apply the adhesive additionally pressing firmly.

If no more adhesive can withstand and the adhesive is tight, the camera screen may be wiped with alcohol. (Fingerprints, grease reduces the adhesive effect)

Now remove the upper surface of the adhesive to the frame with a pair of tweezers. (Attention: Do not lift the bottom of the glue!)

Frame attaches to the camera and then at least 8 hours! burdened with about 1kg!
I have, for example, the lens removed and placed 2 large books on the camera / Ramen. Overnight serviced and the next day held the frame bombproof!

Here 2Tipps: Removes with a sharp knife, the inside of the frame (soft plastic) Otherwise, the Live View image looks gecropt.

Removes the plastic disc from the frame. Image then acts to 100% sharp and is not mirrored.

I had 100% functional although a little tinkering, but now the screen magnifier is 100% ready and still cheaper than reference magnifiers from 200