Specification Brand : K&F Concept BulletPoint1 : High quality and compact. Made of brass and aluminum (not plastic). 100% Brand New Color: Black BulletPoint2 : For Leica M39 mount BulletPoint3 : For Nikon Z6 Z7 Z mount camera BulletPoint4 : 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 : 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". ExternallyAssignedProductIdentifier : 6936069224849 ExternallyAssignedProductIdentifier1 : 0742025050942 ExternallyAssignedProductIdentifier2 : 742025050942 ItemName : New K&F Concept Adapter for Leica M39 Mount Lens to Nikon Z6 Z7 Camera ItemPackageDimensions_Height : 7.9 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 7.9 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-adapters Manufacturer : K&F Concept ModelNumber : KF-39Z PackageLevel : unit PartNumber : KF-39Z 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 : 2019-02-19T09:50:02.821Z Size : M39-NZ