Nikon D500 用户手册

127

A

Auto shutter-speed selection can be fine-tuned by highlighting Auto 
and pressing 

2: for example, values faster than those usually selected 

automatically can be used with telephoto lenses to reduce blur. Note, 
however, that Auto functions only with CPU lenses; if a non-CPU lens is 
used without lens data, minimum shutter speed is fixed at 

1

/

30

s. 

Shutter speeds may drop below the selected minimum if optimum 
exposure can not be achieved at the ISO sensitivity chosen for 
Maximum sensitivity.

A

You can turn auto ISO sensitivity control 
on or off by pressing the 

S (Q) button 

and rotating the sub-command dial. The 
control panel and viewfinder display ISO-
AUTO

 icons when auto ISO sensitivity 

control is on and ISO when it is off.

A

When a flash is used, minimum shutter speed will be set to the value 
selected for Minimum shutter speed unless this value is faster than 
Custom Setting e1 (Flash sync speed, 

0 299) or slower than Custom 

Setting e2 (Flash shutter speed, 

0 300), in which case the value 

selected for Custom Setting e2 will be used instead. Note that ISO 
sensitivity may be raised automatically when auto ISO sensitivity 
control is used in combination with slow sync flash modes (available 
with optional flash units; 

0 201), possibly preventing the camera from 

selecting slow shutter speeds.

A

For information on choosing the reference used to set exposure when 
a flash is used with auto ISO sensitivity control, see Custom Setting e4 
(Auto 

M ISO sensitivity control, 0 300).