Attaches to 52mm Front Filter Threads, 30-Layer Multicoating, Low Dispersion Schott Glass, CNC-Machined Aviation-Grade Aluminum, Increases Close Focus: 2 to 7.8". This Macro Attachment Lens from Ulzani screws on to the front of any lens with a 52mm filter thread and increases ...Attaches to 52mm Front Filter Threads, 30-Layer Multicoating, Low Dispersion Schott Glass, CNC-Machined Aviation-Grade Aluminum, Increases Close Focus: 2 to 7.8". This Macro Attachment Lens from Ulzani screws on to the front of any lens with a 52mm filter thread and increases close focus to a range of 2 to 7.8.
It is made of low-dispersion Schott optical glass with 30 layers of multicoating for realistic color rendering.