Iris Lens is a pro-grade lens set from well-known company dealing with smartphone accessories Photojojo. Iris Lenses work with both iPhone and Android sets. The set uses a lens cap case on a elastic cord that slides between smartphone and case. A set of lens includes lenses—wide angle, fish-eye, and macro lenses—get. The lenses are housed in aluminum casing. The case stays at smartphone while lenses can be interchange and when not a protective cap is provide to secure lens from scratches.
Available at photojojo.com for $99
