Nikon FM2 - Manual (Page 61)

ACCESSORIES ^continued—
Anti-Cold Battery Pack DB-2
In cold weather, use the Anti-Cold Battery Pack DB-2, which
accepts two AA-type batteries, as an alternative power supply
to the batteries inside the camera body. Simply connect the
DB-2 to the camera body, then slip the assembly inside your
pocket or coat to keep it warm. This assures that the camera's
metering system will function even in very cold temperatures.
Right-Angle Viewing Attachment DR-3
Screws onto the viewfinder eyepiece ® to provide a viewfinder
image at a 90° angle to the camera’s optical axis. Very helpful
for closeup photography, duplication work and photomicrography.
Eyepiece Magnifier DG-2
Attached to the viewfinder eyepiece, this accessory enlarges
the image at the center of the viewfinder to assure ever precise
focusing in closeup photography, duplication work and tele­
photography.
Rubber eyecup
Attached to the finder eyepiece, this eyecup excludes strong
light and helps prevent eye fatigue.
Eyepiece ccrrecticn lenses
Accessory lenses that screw onto the viewfinder eyepiece to
enable near- and farsighted photographers to take pictures with­
out having to wear eyeglasses. Nine models are available,
offering a choice of the following diopters: -5, -4, -3, -2, 0,
-i-0.5, -M, -1-2 and -(-3; the diopters represent the combined
dioptry of the viewfinder and lens, and not the dioptry of the
eyepiece correction lens only. For best results, choose the eye­
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