About This 【1】Adapter Using ultra precision CNC machine tools,sophisticated material,high intensity,good operation stability,this Camera Lens Adapter is made of high quality aluminum alloy,durable,non deformation,also with corrosion resistant and glossy. 【2】AMOTOK The ring adapter easily screws onto the front of any 37mm lens,and converts the thread size of your lens to the thread size of any other 49mm accessory(such as filters,hoods,flashes and lens converters),and other 49mm accessories. 【3】Compatible with:all 37mm camera lenses & 49mm accessories(UV,CPL,ND,Lens Hood,Threaded Lens).Your lens thread size will be printed underneath your lens cap or written somewhere on the lens barrel.This number is always prefixed by a"O"(diameter) symbol.For example:Ø37mm=37mm lens thread.This number can be found on the back of your lens cap.Make sure you order the correct size otherwise it will not fit your lens. 【4】The first number of an adapter ring is always the lens thread size,the second number is the filter size of the accessory.If the first number is bigger,it's a step-down ring What is a step up ring?Step up rings,also known as adaptor rings,allow you to use filters and accessories that are not the same size as your cameras lens. 【Notice】37mm lens: Make sure your Camera lens size is 37mm, and the filter size is 49mm, so choose the 37-49mm adapter ring, but not 49-37mm adapter ring.
