Specification Brand : Digital Nc BulletPoint1 : High Definition (Beveled Design) +10 Close-Up Lens BulletPoint2 : High-Index / Low-Dispersion 2 Element Optical Glass BulletPoint3 : Fully Multi-Coated & Threaded BulletPoint4 : Anti-Reflection Coating BulletPoint5 : High Speed Auto-Focus / Infrared Compatible FocalLengthDescription : 18-250 millimeters FocusType : Auto Focus ItemName : Sony Alpha NEX-3N 10x High Definition 2 Element Close-Up (Macro) Lens (49mm) ... ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-diopters LensDesign : Zoom Manufacturer : Digital Nc MaxAperture : 3.5 f_stop MaxFocalLength : 250 millimeters MinFocalLength : 18 millimeters ModelName : Digital Nc ModelNumber : CL10XCKSON3N-49RING58 NumberOfDiaphragmBlades : 3 PartNumber : CL10XCKSON3N-49RING58 ProductDescription : Optics close-up lenses are for quick and easy close-up photography. The close-up lens is screwed on to the front of a lens like a filter, In this case a stepping ring will allow a larger size macro lens to mount unto a smaller lens opening (This method is acceptable and passes all major brands guidelines). This lens has two achromatic elements to correct chromatic aberrations. They do not degrade the high optical performance resulting from your cameras natural lens. ProductSiteLaunchDate : 2014-09-20T06:04:08.865Z