Nikon D810A Users Manual - Page 57
Lens Types, Non-CPU Lenses, displayed in the viewfinder and control panel
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A Lens Types When using a CPU lens equipped with an aperture ring (0 320), lock the aperture ring at the minimum aperture (highest f-number). Type G and E lenses are not equipped with an aperture ring. When using non-CPU lenses (0 163), select exposure mode A or M and adjust aperture using the lens aperture ring. If exposure mode P or S is selected with a non-CPU lens, the camera will function in exposure mode A and 7 will appear in the viewfinder. See page 318 for more information. A Non-CPU Lenses (0 163) Use the lens aperture ring to adjust aperture. If the maximum aperture of the lens has been specified using the Non-CPU lens data item in setup menu (0 163) when a non-CPU lens # is attached, the current f-number will be displayed in the viewfinder and control panel, rounded to the nearest full stop. Otherwise the aperture displays will show only the number of stops (F, with maximum aperture displayed as FA) and the f-number must be read from the lens aperture ring. Aperture for lenses not equipped with AI mechanisms (non-AI lenses) is adjusted using the lens aperture ring. Changes to aperture are not shown in the camera displays; use the sub- command dial to set the camera to the aperture selected with the aperture ring (0 168). 37