b: Metering/Exposure

b1: EV Steps for Exposure Cntrl.

This option (available in all shooting modes) determines whether adjustments to shutter speed, aperture, exposure compensation, flash compensation, and bracketing are made in increments equivalent to 1/3 EV or 1/2 EV.

 

Option

Description

 

1/3 step

Changes to shutter speed, aperture, exposure compensation, and flash

H

(default)

compensation are in increments equivalent to 1/3 EV. The bracketing increment

 

can be selected from 1/3, 2/3, and 1 EV.

 

 

Changes to shutter speed, aperture, exposure compensation, and flash

I1/2 step compensation are in increments equivalent to 1/2 EV. The bracketing increment can be selected from 1/2 and 1 EV.

b2: Easy Exposure Compensation

This option (available in P, S, A, and M modes) controls whether the Ebutton is needed to set exposure compensation (pg. 90). If On is selected, the 0 at the center of the exposure display will blink even when exposure compensation is set to ±0.

Option

Description

 

 

On

Exposure compensation can be set by rotating one of the command dials (see note

 

below). Selected value does not change when exposure meters turn off, camera is

 

 

 

 

turned off, or Off is selected for Custom Setting b2.

 

 

 

 

 

 

 

 

 

Off

 

 

Exposure compensation is set by pressing the E button and rotating the main

(default)

command dial.

 

 

A Change Main/Sub

 

L

The dial used to set exposure compensation when On is selected for Custom Setting b2 (Easy

exposure compensation) depends on the option selected for Custom Setting f5 (Customize

command dials) > Change main/sub (pg. 201).

 

 

 

 

 

 

 

 

 

 

 

 

 

Customize command dials > Change main/sub

 

 

 

 

 

Off (default)

 

On

 

Exposure mode

 

P

 

Sub-command dial

 

Sub-command dial

 

 

S

 

Sub-command dial

 

Main command dial

 

 

A

 

Main command dial

 

Sub-command dial

 

 

M

 

N/A

 

 

 

 

 

 

 

177

Page 197
Image 197
Nikon D90 user manual Metering/Exposure, B1 EV Steps for Exposure Cntrl, B2 Easy Exposure Compensation, 177