NOVOFLEX lens adapters allow lenses from various manufacturers to be used on yet another brand of camera. These precision made adapters are all metal construction for years of durability.NOVOFLEX lens adapters allow lenses from various manufacturers to be used on yet another brand of camera. This will provide you with a broad range of focal length and lens type options to use on your camera. This is a completely manual adapter: no electronic information passes from lens to camera and manual focusing is required. Using the camera's aperture priority mode for exposure metering is suggested. While some 35mm lenses may experience vignetting, many of these lenses, including tilt/shift versions, produce an image circle adequate for the GFX 50 format. In situations where a vignette does occur it can be used as a creative effect or removed in post production. Focus to infinity is possible with this adapter. These precision made adapters are all metal construction for years of durability.