Advertisement
illanual exposure photography
Manual operation allows you to shoot at your choice of any
combination of f/stop and sixteen speeds on the camera's diat.
By varying these combinations, you can achieve not only cor-
rect exposure but also such special effects as under- or over-
exposure, blurred action, etc. Manual is also valuable in devel-
oping your photographic skills, and is additionally recommended
when an electronic flash other than the Nikon dedicated flasn
unit is used. B and M250 settings also offer manual exposure
photography.
How to select the flstop and shutter speed
Exposure is determined by the combination of shutter speed
and aperture. As the numbers on either the aperture ring or
shutter speed dial indrease by one increment, the amount of
light striking the film is reduced by approximately one half. For
example, the amount of light aI 11125 sec. is one half that at
.1/60
sec., and the amount of light at f/'16 is one half that at f/11.
Brighter scenes require either faster speeds or smaller aper-
tures or a combination of both which will give the same amount
of exposure; darker scenes require the reverse. For example,
1/1000 sec. at f/5.6 is the same as either 1/4000 sec. at il2.8 or
1 / 1 2 5 s e c . a t f / 1 6 .
Shutter speedraperture
combinations
that give
the same exposure
25
Advertisement
