Flash Photography
Most digital SLR cameras are equipped with a pop-up flash. 
The flash will
                  fire automatically to illuminate dark or back-lit subjects when set to auto and in
                  some scene modes, including portrait and close-up modes. In P, S, A, and M modes,
                  the flash must be turned on or off manually. Turning the flash off when photographing
                  poorly lit subjects may result in slower shutter speeds and blurred shots or heavy
                  shadows in backlit subjects. 
Using the flash prevents blur and ensures
                  that backlit subjects are not in shadow.
               
Procedure

Auto Pop-up Modes
In
, 
, 
, 
, 
, 
, 
 and 
, 
modes, the built-in flash automatically pops up and
                     fires as required.
1. Choose a flash mode.
Keeping the
 button pressed, rotate the command dial until the desired flash mode appears in
                     the information display.
                  
               In
1. Choose a flash mode.
Keeping the


2. Take photographs.
The flash will pop up as required when the shutter-release button is pressed halfway, and fire when a photograph is taken. If the flash does not pop up automatically, DO NOT attempt to raise it by hand. Failure to observe this precaution could damage the flash.
               The flash will pop up as required when the shutter-release button is pressed halfway, and fire when a photograph is taken. If the flash does not pop up automatically, DO NOT attempt to raise it by hand. Failure to observe this precaution could damage the flash.

Manual Pop-up Modes
In
, 
, 
 and 
, 
 modes, the flash must be raised manually. The flash will not fire if it is not
                     raised.
1. Raise the flash.
Press the
 button to
                     raise the flash.
                  
               In
1. Raise the flash.
Press the

2. Choose a flash mode.
Keeping the
 button pressed, rotate the command dial until the
                     desired flash mode appears in the information display.
                  
               Keeping the

3. Take photographs.
The flash will fire whenever a picture is taken.
               The flash will fire whenever a picture is taken.
Flash Photography: Related Functions
               View information on functions related to Flash Photography.
               
            
            
         
               More D3400 Tips and Tricks
               
            
            
         