Nikon AI-S AF DC-NIKKOR 135mm f-2 - Manual (Page 13)

CONTROLLING DEFOCUS IMAGE—MAKING IMAGE BLUR
AF DC (Defocus image Control)-Nikkor 135mm f/2 enables you to defocus the
background or foreground. The lens’ rounded diaphragm opening makes ouf-of-
focus elemenfs appear as circular high-lighfs on your picfures.
While pushing the DC ring lock button, rotate the DC ring toward the R (rear) side to
blur the background, or toward the F (front) side to blur the foreground. (See lllust. A).
Toeffectivelyblur backgrounder foreground images, turn the DC ring sothef-number
on the ring that corresponds to aperture in use aligns with the index on the DC ring.
Turning the ring beyond the aperture in use lets you create a soft-focus effect.
See photos on page 4.
Photo 1: No image blur
Photo 2: Background images are blurred
Photo 3: Foreground images are blurred
• With the DC ring at either the F or R side, the focusing ring may not show the
correct distance,
• Defocus control should always be performed before focusing. If you rotate the DC
ring after focusing, or during focus lock in autofocus photography, your subject will
be out of focus.
• The effect of defocus image control depends on subject conditions such as
subject-to-background distance, subject-to-foreground distance, etc. As you
cannot verify the results through the viewfinder, perform bracketing with the
DC ring at various settings to obtain the desired effect.
FOCUSING
This lens can be used tor both autofocus and manual focus.
To select autofocus, while pressing the A-M ring lock button, turn the A-M ring so
that “A” aligns with the A-M index. Also, set the camera’s focus mode selector to
autofocus position.
To select manual, turn the A-M ring so “M” aligns with the A-M index. Also, set the
camera’s focus mode selector for manual focus.
• With a Nikon autofocus camera, improperly setting the camera’s focus mode
selector and lens’ A-M ring may damage the camera body.
• With the DC ring set at either the F or R side, the focusing ring will shift slightly
from its original position.
Nikon Rear Focusing (RF) System
A system in which the rear lens elements move inside the lens, there is absolutely
no increase in the overall length of the lens barrel as the lens is focused closer.
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