Nikon Camera F3AF - Manual (Page 83)

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W-3 DA-2 DW-4
see the entire frame with the eye up to approx, 25mm away
from the eyepiece. The Waist-Levei Finder DW-3 is ideal when
you want to use the camera at a low angle or upside down over
your head for shooting over crowds. The Action Finder DA-2
works well for those situations when you cannot bring your eye
close to the finder, such as in fast-breaking sports events, when
you are wearing a helmet or goggles, or when the camera is
enclosed in waterproof underwater housing. The 6X Magnifi­
cation Finder DW-4 is for critical high-magnification close-up
work or photomicrography.
When using the DA-2 or DW-3, be careful that stray light does
not enter from the top and cause an inflated meter reading.