Creating the Digital Image 101
gating control to Default Appr. Level, then press the or buttons to set either for Auto,
where the camera gives the exposure evaluation to all images, to Green or to Yellow where
the camera only marks the images with those exposure values. Press the Exit button to move
out of the Menu program. You can change the IAA color mark on any image by depressing and
holding the OK button with the three colored dots. You see the dot on the Preview screen
move from green to yellow to red. Lift your fi nger when the dot of the desired color is lit up;
for instance, you can move yellow marked images to green or to red. When you make such
a change you also change the fi le name. These markings can be helpful when you evaluate
the images on the computer and also when deleting images as you can delete only the red or
only the red and yellow. As a further benefi t when working with a CF card, the red images are
deleted automatically when the card is full, which allows you to record more images on the
same card. See Figure 5-14 for some menu shortcuts.
The Importance of Perfect Exposures in Digital Images
These various exposure evaluations are helpful and very important in digital imaging since
the tonal range that the sensor can record is limited, and no after image manipulations in the
computer can fi x poor tonal rendition or bring out details that do not exist in the original
image. If your original digital image has no details in white or dark areas, nothing you do
in the computer will bring them back. In principle that is no different from fi lm photogra-
phy. Regardless of what you do in the darkroom, you cannot produce a print with details in
shaded or lighted areas if these details do not exist in the negative.
If you enter digital imaging from fi lm photography, it is worth keeping in mind that
recording images digitally is more like photographing with transparency, not negative fi lm.
There is less exposure latitude, the contrast range is more limited, and exposures need to be
more critical — something to be remembered especially by photographers used to working
Figure 5-13 The Instant Approval Architecture. Instant Approval Architecture indications are
shown on the lower right on the display screen. On the Image File Name, green images start
with A, yellow images with B, and red images with C. You can change the status of a selected
image by depressing the Approval button.
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