At first I thought why would I buy this lens if I can use the iPhone panorama photo function too? Tried the lens anyway. And the lens is fantastic. sharp all over, very valuable and usable wider angle without fisheye distortion. Adds a whole new world of possibilities of using your iPhone for photography. Landscapes more dramatic, indoor shots more ‚complete’. Possible improvements: a good storage/travel solution to carry the valuable SandMarc Lenses, clips and filters. The pouch is too feeble, lenses too valuable for that, and I have a whole set of lenses and filters now. Secondly: the iPhone casing with screw mount works best, better than the clips (you need to center the lens over the sensor ofetn), but I wish the Sandmarc case was sturdy like a UAG or Tech21 so I could leave it on. Now I have to swap.