• 190° Viewing Super Wide Angle: 7artisans 7.5mm F2.8 2nd generation uses 9 groups of 11 optical structures, and the viewing angle can reach 190 degrees. Widely used for tourism VR panoramic viewing and other scenes. and underwater photography • F2.8 Large Aperture: Under the same ISO of the opening, it can achieve more inlet amounts to reduce exposure time and improve image quality, and maintain the star or aurora • 【7.5mm F2.8 II】: The new Hoya lens is used and two ED lenses are added to effectively improve the color difference effect on the edge of the fish eye lens. It works with lens solutions • 【CREATED SUPER WIDE ANGLE FISH EYES】 The conversion focal length of the APS-C frame is about 0.4 inches (11 mm). This can effectively improve the artistic effect and visual effect of photography • 【GOOD AFTER - SALES SERVICE】: If you have any problems with the product, please contact us anytime. We will solve your problem within 24 hours. Moreover, we offer 1 year free warranty service