China (Mainland) Adapter Rings

Specifications: Remarks: OEM welcome There are three types of rings: Step-up, step-down, and macro coupler that are also referred to as reverse rings. Except for macro couplers, the step-up and step-down rings have one end (with male thread) to be mounted on the camera lens and the other end (with female thread) is used for accepting filters, another ring or other accessories. A ring has two size markings in millimeter such as 28mm-37mm,49mm-52mm,77mm-72mm and so on. The first number is the size of the thread that is closer to the camera lens (i. E. The male thread), while the second is the size of the thread of the farther end (i. E. The female thread). Therefore, a step-up ring with marking 43mm-49mm means the male and female thread sizes are 43mm and 49mm, respectively. Similarly, a step-down ring with marking 77mm-72mm means the male and female thread sizes are 77mm and 72mm, respectively. Remarks: OEM welcome