Fisheye lens for piano online training, a professional guide for teachers playing piano     The lens of the mobile phone is designed with an optical lens, which can shoot clear and sharp details, while ensuring that it can be used for a long time. No more vignetting, no more blurry, no more broken     Double split screen, full key, special lens, used for online teaching of distortion-free piano, fisheye lens for online teaching of fine arts, super wide-angle lens for online teaching of painting     Panoramic lens for piano, fisheye lens for mobile phone, and fisheye lens for universal purpose. The wide-angle lens can greatly expand the field of view.     The fisheye lens can make interesting round pictures, making you fall in love with photography. Macro lens allows you to see the world around you closer than ever Meet your daily photography needs.          Colour: black     Material: ABS     Size: about 8 x 6 x 5.6mm          Package Contents:     1 x Piano Fish Eye Lens          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.