Connect your DSRL camera to Telescope eyepiece with this adapter, according to the outer diameter of the eyepiece, with a tolerance of 42.8 to 45.8mm.
The SV186 adapter is designed for telescopes or binoculars. It has universal M42*0.75 threads at its end to connect Canon, Nikon and Sony cameras, so you can use your DSRL camera with your telescopes or binoculars for photography.
For a correct fit to the eyepiece, you must first check the diameter and choose the correct photo adapter for your telescope or binocular.
You must purchase the ring that corresponds to your camera according to the brand, and thus you can adjust this adapter.