Image: lumolens
I first saw the lumolens as a sponsored Facebook post. I don't know how they figured out how to show me a sponsored post but in this case it was perfect because those other lens systems that use the magnetic rings never really worked well for me because the additional metal has to stick on your smart phone and would always fall off so I was looking forward to testing this one.
Image: lumolens and iPhone 5
Image: lumolens photo shoot
Here are some before and after iPhone photos.
You can get the lumolens on Amazon.com.
Update:
A couple of set up tips from lumolens.
Update 2:
Just took this cool shot while skiing.
It takes few moments to get the lens attached correctly so that it stays in focus. Also, if you bang it up against something it moves, and you have to readjust it. I hope they come out with a stationary lens holder that allows you to clip the lens on without having to adjust it or worry that it's not attached exactly right.