Nikon D100 - Manual (Page 44)

32
Tu
torial—Basic Photography
5
Step 5—Check Exposure
With the shutter-release button pressed halfway,
check the shutter-speed and aperture indicators
in the viewfinder. If the photo would be under- or
over-exposed at current settings, one of the fol-
lowing indicators will appear in either the shutter-
speed or aperture display.
Indicator Meaning
Photo will be overexposed. Use a Neutral Density (ND) filter.
Shutter Speed and Camera Shake
To prevent blurring caused by camera shake, the shutter speed should be faster than
the inverse of the focal length of the lens, in seconds (for example, if a lens has a focal
length of 50 mm, shutter speed should be faster than
1 /
50
s). Use of a tripod is recom-
mended when shooting at slower shutter speeds. To prevent blur, try raising the built-
in Speedlight (see following page) or increasing sensitivity (
48).
3—ISO Auto ( 148)
When ON is selected for Custom Setting 3 (ISO Auto), the camera will automatically
vary sensitivity from the value selected by the user to help ensure optimum exposure.
9—EV Step ( 151)
By default, shutter speed and aperture are shown in increments equivalent to 1 /
3
EV.
Using Custom Setting 9, you can change the increment to 1 /
2
EV.
Basic Photography
Photo will be underexposed. Use the built-in Speedlight (see opposite)
or choose a higher sensitivity (ISO equivalency).