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The addition of this new mid-brightness mode provides a smoother
transition between strobe exposures taken at different scene brightness.
High Brightness = Fill Flash
Mid Brightness = 50% Flash/50% Ambient
Low Brightness = Full Flash
ProCam Low/Mid-Brightness Strobe Exposures
Low Brightness = Less than 17' time-out at 44ms or Integration
Mid Brightness = More than 17' time-out at 2.8 sec. or Integration
In low or mid-brightness conditions when subjects are under 17 feet from
the camera (determined by the transducer), time-out will occur 44 +/- 5ms
after first light unless the exposure is terminated earlier by the integration
of enough light through the photocells.
For subjects beyond 17 feet in low/mid-brightness settings, exposure
time-out occurs 2.8 +/- 0.3 seconds after first light, again, unless the
exposure is terminated sooner by the integration of sufficient light.
Kick-Up
Another improvement to the exposure control system is Kick-Up
brightness. This new exposure mode causes pictures taken in scene
brightness above
~
624 cd/ft
2
to be progressively overexposed.
Over exposure is accomplished by a minimum exposure time of 6.2 ms
which is hand coded in the IC’s kick-up which gives exposures which are
more in line with customer expectations.
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