[. . . ] While holding down the lens release button on the camera, rotate the lens counterclockwise until it stops, then detach the lens. [. . . ] If this happens, refer to the instruction manual of the camera and select the proper focus mode. Precautions common to all lenses such as notes on use are found in the separate "Precautions before using". When carrying a camera with the lens attached, always firmly hold both the camera and the lens. When using a flash, always remove the lens hood and shoot at least 1 m (3. With certain combinations of lens and flash, the lens may partially block the light of the flash, resulting in a shadow at the bottom of the picture. *1 The value shown above for equivalent 35mm-format focal length is for Interchangeable Lens Cameras equipped with an APS-C sized image sensor. [. . . ] Not press the lens release button on the camera when Do mounting the lens. [. . . ]