This application will help you to experience fish eye photography as you never did before. - This applications operates on pictures taken with the FishEye lens on DSLR or mirrorless camera. It is NOT designed to take pictures or fake fisheye effect on pictures taken with not a fish eye lens. - For immersive experience you need GOOGLE CARDBOARD or compatible device. You can use "2D" mode otherwise. A fisheye lens is an ultra wide-angle lens that produces strong visual distortion intended to create a wide panoramic image. All lens with 180° diagonal angle of view should be compatible with the application: - Canon EF 8-15mm f/4L Fisheye USM Lens - Samyang 7.5mm f/3.5 UMC Fisheye MFT Lens - Samyang 7.5mm T3.8 Cine UMC Fisheye Lens for Micro Four Thirds Mount - Bower 8mm f/2.8 Ultra Compact Fisheye Lens for Sony E Mount - Bower 8mm f/2.8 Ultra Compact Fisheye Lens for Fujifilm X Mount - Bower 8mm f/2.8 Ultra Compact Fisheye Lens for Samsung NX Mount You can try other lens. Please let us know if it works for you.