I bought this black eye for my iPhone and the instructions are very simple: Place the lens on the camera. I did so and and I see is a blurry display through my phone. I put the sense on properly without any dust and it is entered properly. Is this a defective product or am I doing something wrong?

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  • It's a defective class of products. – xiota Jan 10 '19 at 2:10
  • @xiota I’m pretty happy with the Moment brand. Only ones I’ve seen worth their cash though... – Hueco Jan 10 '19 at 4:02
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    Try focusing on things with your phone very close to them. Close, as in the add on lens is almost touching them. Closer than what your phone can normally focus on. What happens then? – Michael C Jan 10 '19 at 4:31
  • I've never heard of these things. Can you explain what it is supposed to do? – osullic Jan 10 '19 at 9:11
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    You've put a cheap reading monocle on the eye of your phone, so it is having trouble seeing distance. I can relate. – user31502 Jan 10 '19 at 17:12

A diopter lens* like this is really only supposed to work at VERY close distances, which your unmodified phone or camera lens won't focus to (otherwise, there is no need to use a diopter). From the picture, it looks like you are holding the camera a two feet or more away from the subject - the phone can likely focus on that just fine without a diopter. Try using it on a subject just an inch away - that is what the specifications say, "20-26mm focus distance".

If you need magnification of a far away subject instead of close ups of something very near, you need to shop for a "telephoto", not "macro" accessory.

This accessory enables "microscope", not "telescope" behaviour.

*This would be the precise term to a photographer. "Macro lens" is ambigous, it could mean a diopter attachment for either a phone or camera, but a camera store would assume you want to buy a complete interchangeable lens for a DSLR/DSLM camera, worth hundreds of dollars, if you ask for a macro lens.

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