Hi, Notice： If your camera indicated "lens is not properly installed", please modify the camera menu settings. Usually called the "release the shutter the lens is not installed", you can modify the settings to be allowed. Specifically refer to the camera manual When using the adapter ring for the first time, please say that the "No lens release shutter" option in the body menu is turned on, otherwise the lens will not be recognized and the shutter will not be used to take pictures.