Справочник Пользователя для Nikon D2HS

The higher the sensitivity, the more likely pictures are to be subject to “noise” in the 
form of randomly-spaced, brightly-colored pixels.  Pho tos taken at HI-1 or HI-2 will 
likely con tain ap pre cia ble amounts of noise.

This option can be used to reduce noise at sensitivities of ISO 800 or more.  Note that 
although noise reduction is always in effect at sensitities of HI-1  and  HI-2, turning 
High ISO NR on will increase the amount of noise reduction performed.

When ON is selected for Custom Setting b1 (ISO auto), the camera will automatically 
vary sensitivity from the value selected by the user to help ensure optimum exposure.  
Sensitivity can not be set to HI-1 or HI-2 while ISO auto is on, and ON can not be 
selected for ISO auto is when ISO is set to HI-1 or HI-2.

Depending on the option selected for Custom Setting b2, sensitivity can also be set in 
increments equivalent to ½ or 1 EV.

ISO step value set to 1/2 step 

ISO step value set to 1 step

If possible, the current sensitivity setting is maintained when the step value is changed.  
If the current sensitivity setting is not available at the new step value, sensitivity will be 
rounded up to the nearest available setting.

If  Frame Count is selected for Cntrl panel / fi nder display > Rear control panel 
(Custom Setting d5), sensitivity will only be displayed in the rear control panel while 
the ISO button is pressed.  If ISO is selected, sensitivity will be displayed except during 
voice memo recording and playback.