Nikon D7100 Body Manuale Utente

47

#

#

, S, A, and M modes offer different degrees of control over shutter 

speed and aperture.

(0 48): Camera sets shutter speed and aperture for optimal exposure. 

Recommended for snapshots and in other situations in which there is little time to 
adjust camera settings.

(0 49): User chooses shutter speed; camera selects aperture for best 

results. Use to freeze or blur motion.

(0 50): User chooses aperture; camera selects shutter speed for 

best results. Use to blur background or bring both foreground and background into 
focus.

 (0 51): User controls both shutter speed and aperture. Set shutter speed to 

Bulb (A) or Time (%) for long time-exposures.

A

When using a CPU lens equipped with an aperture ring (0 296), lock the aperture ring at the 
minimum aperture (highest f-number). Type G lenses are not equipped with an aperture 
ring.

Non-CPU lenses can only be used in modes A (aperture-priority auto) and M (manual), when 
aperture can only be adjusted using the lens aperture ring. Selecting any other mode 
disables the shutter release.

A

Non-CPU Lenses (0 295)

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 (0 149) 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.