The tail can rotate 360 degrees, the front and back tilt angle is 0-12 degrees, and the left and right translation is 0-15 mm.Material: AluminiumColor : Black and SilverDiaphragm control of the lens is set manually.Feature:Completely manual control, manual focus and manual exposure.It can focus to infinity.Focus infinity.If M couldn't be pressing the shutter, or warning "lens is not properly installed",please modify the camera menu settings.Usually called the" release the shutter without the lens".To use, simply attach the ring to your lens and then the lens to the camera. When you have finished remove both together.Compatible: Lens: PENTAX 645 PT645 mount lensesCamera :sony e mount cameras a7 a7s A7SII a7r a7r2 a7r3 a7r4 a9 a5100 a6000 a6300 a6500 etcPackage:lens adapter x 1pcRetail Packing