Spot-Metering Mode (iOS Only)
When no
Luxi™
clip is attached, the central part of the app displays an image from the
device’s rear-facing camera. Note that readings taken in this mode are less accurate than
those taken with the
Luxi™
clip, due to the fact that they are based upon the exposure
levels in the photographic data displayed in the center of the app–this is not a reading of
ambient light levels, as would be given when using
Luxi™
. This mode is relatively akin to
using the spot meter which is built in to most modern camera systems.
The crosshairs (enabled in the app’s settings) in the center of the rear camera’s image can
be moved around with one’s finger. This feature makes it possible to take a spot reading
of an exact point within the image data. A photographer might want to take, for
example, the spot readings for the darkest and lightest points of the image, and then
use that data to formulate an educated guess as to what the optimal exposure settings
might be.
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FIG. 4:
Spot-Metering Mode
