1、[Wide Angle And Macro Design] A DSLR exchange lens designed for full frame that can image well from far distances to 1: 1x photographic magnification. Let the beauty of macro details and grand backgrounds dissolve into one, strong perspective distortion, and experience the visual impact of wide angle. 2、[Compatible Model] The 15mm f/4 lens mounts directly onto the camera's existing lens system, making it ideal for shooting in small indoor spaces or creating breathtaking landscape photographs. Compatible with for 7D 7D Mark II 70D 60D 60Da T6s T6i T5i T5 T4i T3i T3 T2i T1i SL1 SLR cameras. 3、[Premium Materials] Mechanical structure of this lens is made of all metal parts, which ensures the assembly accuracy and durability of the lens. The optical glass lens is clean and clear without any scratches or fogging. The blades are dry, clean and no oil. Each lens utilizes a low reflection multilayer film that completely eliminates ghosting and glaring. 4、[Two Moving Focus Groups] To ensure excellent image quality from far distances to close range, this lens employs two moving focus groups, the primary focus group and the secondary focus group, to completely compensate for the degradation of resolution caused by focusing. 5、[High Definition] A high refractive index component and an super low dispersion component provide super high definition in the center and at the edges. Barrel distortion is also carefully controlled. 14 aperture blades form a near circular aperture that produces a creamy, shallow depth of field.