Nikon PC-E Micro NIKKOR 85mm f/2.8D Manuel D'utilisation page 24

*1 Exposure will be incorrect when the lens is shifted and/
or tilted.
*2 P includes AUTO (General-Purpose Program) and Vari-Program
System.
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*3 When the lens power or the camera is turned off
(including using the auto meter off function) while
stopping down the lens aperture, the diaphragm blades
fully open to the maximum aperture. This is not a
malfunction.
*4 Stopping down the lens aperture activates AE-L (AE
lock).
*5 Diaphragm blades open and close after each press of the
shutter button, and exposure will be incorrect for
continuous shooting.
*6 When the lens power or the camera is turned off
(including using the auto meter off function) while
stopping down the lens aperture, the lens aperture
remains at the stopped down setting. When the camera
is turned on again or the camera shutter release button
is lightly pressed, the diaphragm blades open once and
then close. This is not a malfunction.
*7 When the camera is turned off using the auto meter off
function while stopping down the lens aperture, lightly
press the shutter release button to display the selected
aperture value in the camera's LCD or view finder before
shooting. Failure to do this may lead to incorrect
exposure when the shutter release button is fully
depressed.
Aperture stop-down button (one-touch preset
aperture operation)
• The lens aperture can be stopped down from maximum
aperture to a selected aperture by pressing the aperture
stop-down button. Pressing the button again fully opens
the aperture. Whether the aperture is stopped down or
not, check the camera viewfinder, or check the
diaphragm from the front of the lens.
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