Nikon EH EL2 Bedienungsanleitung PDF herunterladen (Seite 22)

FOCUSING-continued

Infrared Photography

The plane of sharpest focus for infrared light is slightly

more distant than its counterpart for visible light

seen

through the camera's viewfinder. Thus, for sharpest fo-

cus in infrared photography, adjustments must be

made.

To compensate for this shift in focus, first focus

the image sharply through the viewfinder. Then, turn

the focusing ring counterclockwise until the point fo-

cused is aligned with the red dot (or line) provided on

the lens barrel. For example, in the picture below, the

lens has been focused for infinity (°°) infrared shooting.

Note that when lenses having a focal length of 50mm

or less are used stopped down to f/8 or below, no ad-

justment is necessary due to the large depth of field

available.

Note:

Some new optics using Nikon's Extra-low Dispersion

(ED) glass, as well as reflex (catadioptric) lenses, do not require

refocusing for infrared photography. Refer to individual lens

instruction manuals for details.

Film-Plane Indicator

Under various precision shooting situations, such as

close-up photography, it is often necessary to measure

the film-to-subject distance to ensure the sharpest

focus.

The camera's film plane is indicated by the spe-

cial mark (-0-) on the upper right top of the camera

body. Note that this indicator is 46.5mm from the

front surface of the camera's lens mounting flange.

mounting flange front surface)

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Nikon EH EL2 Bedienungsanleitung Seite 22