A full set of 12 kinds of functions, various and comprehensive, less full set on the market, less competition; The analog SLR design with the lens and filter can superimpose and switch the filter, which is novel and fun, and improves the performance of the shooting equipment     The 52mm filter is added to the wide-angle front end for easy stacking and switching     The 52mm filter can be used on all SLR cameras (single-lens cameras) with a 52mm interface     Polarizer CPL: Connector (bayonet) size: 52mm; UV diameter: 52m; Frame material: advanced aviation aluminum; Lens material: two pieces of optical glass; Shooting purpose: also known as a polarizer, which mainly filters the reflected light of non-metallic surfaces, such as the reflection of water and glass, balances the light and makes the sky bluer. It is one of the most commonly used filters in landscape photography.     Star Mirror Star: Connector (bayonet) size: 52mm; UV diameter: 52mm; Star beam: 6 lines; Frame material: advanced aviation aluminum; Lens material: optical glass; Shooting purpose: also known as starlight mirror, night scene shooting artifact presents a radioactive beam to a point light source          Macro lens:     Interface (bayonet) size: 37m     Macro magnification: 15X     Frame material: advanced aviation aluminum     Lens material: high-quality optical lanthanide glass     Lens process: Multi-layer anti-reflection green film     Shooting purposes: to make up for the shortcomings of mobile phones that cannot be focused when taking photos at close distances, and improve the micro-shooting capabilities of mobile phones, with a focusing distance of 3-6cm; macro and wide-angle are combined lenses, and macro is a part of wide-angle     Reducer ND:     Connector (bayonet) size: 52mm     UV diameter: 52mm     Number of light reduction gears: 3 gears (ND8)     Frame material: advanced aviation aluminum     Lens material: optical resin lens     Shooting purposes: also known as medium gray density mirrors, which can reduce the shutter speed and are used to shoot traffic, light and shadow flowing clouds and foggy water     Colour: black     Material: glass     Size: 17 x 13.5 x 7cm          Package Contents:     1 x clip     1 x 37-52 adapter ring     1 x wide-angle lens     1 x macro lens     1 x CPL mirror     1 x starlight mirror     1 x dimming mirror     7 x gradient lenses     1 x storage bag          Only the above package content, other products are not included.     Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.