Nikon D5300 Guide D’Exploitation

Page de 308
180
Photographs taken at high ISO sensitivities can be processed to reduce “noise.”
Adjust ISO sensitivity (
❚❚Auto ISO Sensitivity control
If Off is chosen for Auto ISO sensitivity control in PSA, and M modes, ISO sensitivity 
will remain fixed at the value selected by the user (
0 67). When On is chosen, ISO 
sensitivity will automatically be adjusted if optimal exposure can not be achieved at 
the value selected by the user. The maximum value for auto ISO sensitivity can be 
selected using the Maximum sensitivity option in the Auto ISO sensitivity control 
menu (choose lower values to prevent noise (randomly-spaced bright pixels, fog, or 
lines, but note that if the ISO sensitivity selected by the user is higher than that 
chosen for Maximum sensitivity, the value selected by the user will be used instead; 
the minimum value for auto ISO sensitivity is automatically set to ISO 100)). In modes 
P
 and A, sensitivity will only be adjusted if underexposure would result at the shutter 
speed selected for Minimum shutter speed (
1
/
2000
–1 s, or Auto; in modes S and M
sensitivity will be adjusted for optimal exposure at the shutter speed selected by the 
user). If Auto (available only with CPU lenses) is selected, the camera will choose the 
minimum shutter speed based on the focal length of the lens (auto shutter-speed 
selection can be fine-tuned by highlighting Auto and pressing 
2). Slower shutter 
speeds will be used only if optimum exposure can not be achieved at the ISO 
sensitivity value selected for Maximum sensitivity.
High ISO NR
G button
➜ C shooting menu
Option
Description
High
Reduce noise (randomly-spaced bright pixels, lines, or fog), particularly in 
photographs taken at high ISO sensitivities. Choose the amount of noise reduction 
performed from HighNormal, and Low.
Normal
Low
Off
Noise reduction is only performed as required. The amount of noise reduction is 
less than the amount performed when Low is selected for High ISO NR.
ISO Sensitivity Settings
G button
➜ C shooting menu