Specification Brand : ADAPTER RING BulletPoint : ADAPTER RING WITH RETAINING RING 30.5 SO5 SERIES 5 BulletPoint1 : LOT OF APPROXIMATELY 57 ADAPTER RINGS BulletPoint2 : VARIOUS BRANDS AND VARIOUS SIZES BulletPoint3 : Corrosion-Resistant Hard Anodized Finish 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. ExposureControlType : Manual ExternallyAssignedProductIdentifier : 6971634249162 ExternallyAssignedProductIdentifier1 : 0703508588871 ExternallyAssignedProductIdentifier2 : 703508588871 IncludedComponents : Fotodiox Premium Product ItemName : Series 5 30.5MM TIFFEN Slip-ON Lens Adapter with RETAINING Ring Fast N Free ItemPackageDimensions_Height : 0.75 inches ItemPackageDimensions_Length : 4.25 inches ItemPackageDimensions_Width : 4.38 inches ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-adapters Manufacturer : ADAPTER RING ModelNumber : 498462 NumberOfBoxes : 1 NumberOfItems : 1 PackageLevel : unit PartNumber : NONE ProductDescription : TIFFEN ADAPTER RING WITH RETAINING RING 30.5 SO5 SERIES 5. NEW IN BOX (SOME DAMAGE TO BOX). ProductSiteLaunchDate : 2020-06-05T20:07:41.473Z ShootingModes1 : Aperture Priority ShootingModes2 : Manual Size : QY M42-FX Pro StreetDate : 2020-06-15T00:00:01Z SupplierDeclaredDgHzRegulation : unknown WarrantyDescription : 12 Month Warranty WaterResistanceLevel : not_water_resistant