These close up filters simply screw onto the front of any 37mm lens, and will maintain resolution and picture clarity while magnifying image size. Plus, these filters are double-threaded, which means you can combine them to achieve increased magnification, or you can attach additional optics such as polarizers or skylight filters.These close up filters are ideal for photographing small items and focusing in on details of coins, flowers, jewelry and insects, as well as industrial photos of miniaturized components, medical and dental laboratory work and other scientific photography. Features: 1. This macro filter set consists of 4 close-up filters allowing the photographer to achieve professional results at low price2. Made of high quality optical magnifying glass cutting down the close-focusing distance of the lens3. The filters come in 4 different strengths: +1,+2, +4, +104. You can use the filters individually or combined (+1 plus +4 will become +5) Package includes: 1 x 37mm +1 Close Up Lens1 x 37mm +2 Close Up Lens1 x 37mm +4 Close Up Lens1 x 37mm +10 Close Up Lens1 x Lens case Not made by Samsung