<p>Kase is a Chinese optical manufacturer founded in 2011, specializing in high-performance camera filters and optical accessories. With independent research, development, and manufacturing facilities based in China, Kase has built a reputation for professional-grade filter systems used by photographers and videographers worldwide.</p><p>The brand's product lineup encompasses a comprehensive range of optical products including ND filters, circular polarizers, graduated filters, magnetic filter systems, and—more recently—autofocus camera lenses. Their filter systems, particularly the K-series modular design, are widely recognized for their optical clarity and build quality in aluminum alloy and Schott optical glass.</p><p>For photography and video users, Kase offers an accessible yet professional ecosystem: from compact filter holders compatible with most lens diameters to autofocus prime lenses like the 85mm f/1.4 and the innovative 150mm f/5.6 AF Reflex mirror lens—unique in its category for bringing autofocus to the classic catadioptric optical design.</p>
