Superb nikon z image quality. Nikon’s advanced optical formula ensures sharp, high-resolution images with only one or two stops of light loss depending on the teleconverter used Sharp and fast, superb autofocus, rock-solid vibration reduction, users get the sharpness and speed they’re used to from nikon Z Toughness built in. Z teleconverters are sealed to keep dust and moisture out. Nikon’s fluorine coat effectively repels dust and dirt, without compromising image quality Authentically nikon. Constructed from tough, textured anodized aluminium, z teleconverters blend smoothly with nikon z cameras and nikkor z lenses