Nikon AF-S DX Micro- Nikkor 40mm f/2.8G User Manual - Page 5

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Nikon AF-S DX Micro- Nikkor 40mm f/2.8G User Manual

M/A (Autofocus with Manual Override)

To focus using autofocus with manual override (M/A):

Slide the lens focus-mode switch to M/A.

Focus.

If desired, autofocus can be over-ridden by rotating the

lens focus ring while the shutter-release button is pressed

halfway (or, if the camera is equipped with an AF-ON

button, while the AF-ON button is pressed). To refocus

using autofocus, press the shutter-release button halfway

or press the AF-ON button again.

The Focus Limit Switch

This switch determines the focus distance limits for autofocus.

FULL: Select this option for subjects that may be

∞–0.2 m: If your subject will always be at

■ Aperture

Aperture is adjusted using camera controls. If the camera is in

exposure mode A or M, aperture will automatically be

adjusted by up to 1.2 stops to maintain the same effective

f-number at different focus distances.

■ Depth of Field

If the camera offers depth-of-field preview (stop down), depth

of field can also be previewed in the viewfinder.

closer than 0.2 m (0.7 ft).

distance of at least 0.2 m (0.7 ft), select this

option for faster focusing.