Nikon 25215 manual Aperture Lock, F5-Command Dials

Non-CPU Lenses

If the maximum aperture of the lens has been specified using the Non-CPU lens data item in shooting menu

(128) when a non-CPU lens is attached, the current f/-number will be displayed in the viewfinder and top control panel, rounded to the nearest full stop. Other-

wise the aperture displays will show only the number of stops ( , with maximum ap-

erture displayed as ) and the f/-number must be read from the lens aperture ring.

Exposure Warning

If the camera is unable to produce the correct exposure at the selected aperture, the electronic analog exposure display (93) in the viewfinder will show the amount of under- or over-exposure and one of the following indicators will be displayed in the control panel and viewfinder shutter-speed displays:

Indicator Description

Subject too bright. Choose smaller aperture (larger f/-number) or lower sensitivity (ISO equivalency; 52), or use optional Neutral Density (ND) filter.

Subject too dark. Choose larger aperture (smaller f/-number) or higher sensitivity (ISO equivalency; 52), or use optional Speedlight.

Aperture Lock

Aperture can be locked at the selected setting ( 94).

b3—EV Step ( 189)

This option controls whether changes to shutter speed and aperture are made in incre- ments equivalent to 1/3 EV (the default setting), ½ EV, or 1 EV.

f5—Command Dials ( 206)

Command dials > Change Main/Sub and Command dials > Aperture setting con- trol whether aperture is assigned with the main command dial, the sub-command dial, or the lens aperture ring. Regardless of the settings chosen, the command dials are always used with type G lenses, the lens aperture ring with non-CPU lenses.

Taking Photographs—Exposure

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