There is no ROM connection on the ring so aperture value of the lens is set manually
It is possible to use Macro rings and other accessories
With aperture pin stop down flange
It allows infinity focus.
Material: Anodized Aluminum Metal
color : black
Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. 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 with manual mode or aperture priority mode.