A3: Rangefinder; B: Exposure; B1: Ev Steps For Exposure Cntrl; C: Timers/Ae Lock - Nikon D5100 User Manual

a3: Rangefinder

Choose On to use the exposure indicator to determine whether the camera is
correctly focused in manual focus mode (0 65; note that this function is not available
in shooting mode M, when the exposure indicator instead shows whether the subject
is correctly exposed).
Indicator
A
Using the Rangefinder
The rangefinder requires a lens with a maximum aperture of f/5.6 or faster and is not
available in live view. The desired results may not be achieved in situations in which the
camera would be unable to focus using autofocus (0 40).

b: Exposure

b1: EV Steps for Exposure Cntrl.

Select the increments used when making adjustments to
shutter speed, aperture, exposure and flash compensation, and
bracketing.

c: Timers/AE Lock

c1: Shutter-Release Button AE-L

At the default setting of Off, exposure only locks when the AE-L/
AF-L button is pressed. If On is selected, exposure will also lock
when the shutter-release button is pressed halfway.
Description
Camera in focus.
Focus point is slightly in
front of subject.
Focus point is well in
front of subject.
G button ➜ A Custom Settings menu
Indicator
Focus point is slightly
behind subject.
Focus point is well
behind subject.
Camera can not
determine correct
focus.
G button ➜ A Custom Settings menu
G button ➜ A Custom Settings menu
Description
L
159