Bower Ultra-Wide 7.5mm f/3.5 Fisheye Lens for Micro 4/3 SLY75BM43 High-quality construction with hybrid aspherical lens for crisp image capture Versatile Micro Four Thirds mount Minimum Focusing Distance of 4 inches (9cm) High index, low-dispersion multi-coated optical glass to reduce flare Groups/Elements: 7/9