Nikon D300 - Note on Lens Types

Figure 9-10. Control panel with A-Aperture priority auto
mode
A – Aperture priority auto mode lets you control the aperture
while the D300(S) takes care of the shutter speed for optimal
exposures. With newer AF-S and G lenses, you’ll use the
Sub-command dial to select an aperture. You can control the
aperture from maximum to minimum just by using the
Sub-command dial on the D300(S).
Note on Lens Types – If you use an older AF lens with an
aperture ring, set it to the smallest aperture, then use the
Sub-command dial, instead of the ring on the lens, to change
the aperture. If you have older non-CPU lenses, you’ll have to
use the aperture ring on the lens to control the aperture.
Depth of field (DOF) is an extremely important concept to
understand for photographers. Simply put, it allows you to
control the range of sharp focus in your images. Please check
the downloadable resources at http://rockynook.com/
NikonD300S for a document called Understanding Depth of
Field. This document will give a new DSLR user a nice
tutorial on controlling depth of field.
Now, let’s examine Manual mode (M) and see how a
dedicated photographer can take complete control of their
camera.
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