M42-m39 17-31 Focusing Barrel Focusing Ring Zoom Head Change Mouth Ring

The focus ring is the device on the camera lens used to adjust the focus.By rotating the focus ring, you can adjust the length of the lens so that the object you to is clearly imaged on the camera.Allows focus at . versatile and practical, it is the for playing with magnifiers or changing .It can be used as a lens without a focusing system after changing the lens, or it can be added as a macro focus adapter.Type: focus ringModel: M42-M39Application: CameraFeatures: camera adapter ringcolor:BlackMaterial:copperPackage Contents:1 x focus ringOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +\/- 1-3cm.