20Introduction—First Steps5.1 Turn the camera offTurn the camera off before attaching orre moving lenses.5.2 Attach a lensKeeping the mounting mark on the lensaligned with the mounting mark on thecamera body, position the lens in the cam-era’s bayonet mount. Being careful not topress the lens-release button, rotate the lenscounter-clockwise until it clicks into place.5.3 Lock aperture at the minimum settingThis step is not necessary if you are using atype G lens not equipped with an aperturering. If you are using a lens of another type,lock aperture at the minimum setting (high-est f/-number).If this step is omitted when attaching a CPUlens, the aper ture displays in the controlpanel and viewfinder will show a blinkingwhen the camera is turned on. Photo -graphs can not be taken until the camera isturned off and aper ture locked at the high-est f/-num ber.Step 5—Attach a LensNikon recommends using a type G or type D CPU lens to take full advantageof the features the camera offers.5Type D lensType G lensCPU lenses have CPUcontacts
