Pentax K100D User Manual - Page 39

Attaching the Lens 37 Getting Started All camera exposure modes are available when using DA, D FA, FA J or other lenses with Aperture s (Auto) position. Some functions are restricted when lenses are not set to Aperture s (Auto). Also see "Notes on [Using Aperture Ring]" (p.188). Other lenses and accessories will not be available with factory default settings. To allow shutter release with lenses or accessories not listed above, set [Using aperture ring] in custom 2 function settings. (p.107) Turn the camera off before attaching or removing the lens to prevent unexpected lens movement. 1 Check that the camera is off. 2 Remove the body mount cover (1) and lens mount cover (2). Be sure to put the lens down with the lens mount side facing upward to protect from damage to the area around the lens mount after removal. 3 Align the red dots on the camera and the lens, and secure by turning the lens clockwise until it clicks. After attaching, check that the lens is secured. Also check that the red dots of the lens are on top and attachment portion does not move sideways.