Specification Brand : K&F Concept BulletPoint1 : Material : High quality and compact. Made of brass and aluminum (not plastic). 100% Brand New Color: Black BulletPoint2 : Lens : For Pentax K mount lens BulletPoint3 : Camera : For Nikon Z6 Z7 Z50 Z mount camera BulletPoint4 : Please note : If your camera indicated "lens is not properly installed", please modify the camera menu settings.Usually called the release the shutter the lens is not installed", you can modify the settings to allow. Specifically refer to the camera manual BulletPoint5 : Please note : Infinity focus position:the position of the infinity mark 【∞】of the telephoto lens or super telephoto lens is shifted slightly to the positive side to enable focus adjustment even when focus shift is caused due to temperature changes.The shift range is denoted by an L-shaped line, Be sure to check the focus through the viewfinder even when you shoot at infinity. ExternallyAssignedProductIdentifier : 6936069218053 ItemName : K&F Concept Lens Adapter Ring for Pentax K to Nikon Z Mount Z50 Z6 Z7 Camera ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-adapters Manufacturer : K&F Concept PartNumber : K&F Concept ProductDescription : Note: 1.If your camera indicated "lens is not properly installed", please modify the camera menu settings. 2.Usually called the release the shutter the lens is not installed", you can modify the settings to allow. Specifically refer to the camera manual 3.Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate while using this adapter.There is no electrical contacts in the adapter ring. Full manual operation, manual focus, manual iris adjustment can be achieved with body manual exposure, aperture priority exposure.In this case "stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body.You can shoot in Manual or Aperture Priority Mode. Before use, set your camera Menu: "Shoot without lens". ProductSiteLaunchDate : 2019-09-11T08:25:03.143Z Size : QY PK-NZ