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b1 ISO Sensitivity Step Value
This setting determines the size of the “jumps” it should use when making ISO adjust-
ments—either one-third or one-half stop. At the one-third stop setting, typical ISO val-
ues would be 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, and so forth.
Choose 1/2 stop settings, and your choices would be 200, 280, 400, 500, 560, 800,
1100, and 1600 over the same range. For really large increments, set the full-stop option,
and choose 200, 400, 800, and 1600, and so forth. The larger increment can help you
leap from one ISO setting to one that’s much larger with one click in environments
where you don’t care to fine-tune sensitivity. As you’ve surmised, your choices include
1/3 step (the default); 1/2 step; and 1 step.
b2 EV Steps for Exposure Cntrl.
This setting tells the Nikon D7000 the size of the “jumps” it should use when making
exposure adjustments—either one-third or one-half stop. The increment you specify
here applies to f/stops, shutter speeds, EV changes, and autoexposure bracketing. As
with ISO sensitivity step value, you can select from 1/3 step (the default); or 1/2 step.
David Busch’s Nikon D7000 Guide to Digital SLR Photography286
Figure 9.4
There are five
metering/expo-
sure options.