"Biscuit" Lens: 18mm f6.3 is an ultra-thin "biscuit type fixed focus lens", with compact design and Excellent portability, excellent image quality and dustproof performance. You just need to put it on the camera body as a protective body cover to keep the weight of the camera. | Constant Aperture: The fastest focusing is without focusing, the focal length is 18mm, the aperture is F6.3, and the focus distance of Mark II is 0.3M~∞ more than that of Mark I, opening endless space, creating charming closing experience, and capturing portraits from daily life in an instant. | Wide Scope of Application: The lens can be easily put into the pocket, suitable for various styles and scenes of street photography and landscape photography: tourism, scenery, people, still life, insects, buildings, etc. | Excellent Image Structure: It combines lightweight design and excellent image quality to cover APS-C sensor. Although the size is compact, the lens is composed of five groups of six pieces. Keeping the weight of the camera can provide excellent image resolution. | Extensive Compatibility: Compatible for Nikon Z50 Z6 Z7 Z6 II. If you have any questions about purchasing our products, please contact us at any time, and we will do our best to provide you with solutions!