Which iPhone lens is best? The Zeiss ExoLens looks like a winner.

The iPhone has one of the best smartphone cameras out there. The only thing holding it back? Its fixed lens.

Committed iPhone photographers have long recommended adding an external lens. Olloclip, so far, makes the most popular models that actually offer decent quality.

They cost anywhere from $70 to $120 for the iPhone 6, 6S, 6 Plus and 6S Plus. There are also a bunch of cheap external lenses out there that you can buy anywhere from $1 to $50.

The German company Zeiss — revered by photographers for its high-quality interchangeable lenses for traditional cameras — already sells a 165-degree lens for the iPhone.  Read more...