for three-dimensional shape measurement using a digital-light-processing projector," Optical Engineering, vol.
Many point-and-shoot camera models have no manual override for exposure; you can't control the camera's shutter speed and lens aperture (opening), so you have to rely on its autoexposure
Its functions include passive autofocus and autoexposure
, multi-AF (for sharp focus even when subjects are off-center in the frame), three-segment exposure metering (balanced so subjects aren't over or under lighted), macro mode, exposure compensation (for back-lighted subjects) and continuous drive (motor drive).
It offers single and continuous (predictive) autofocus modes, three metering systems, three autoexposure
modes, ISO 100-, 200- , and 400-equivalent sensitivities, auto-bracketing at three exposure levels, and shutter speed from 1/6,000 second to 30 seconds.
Digital images were captured with an autoexposure
CCD camera (MicroImage Video Systems Co., Boyertown, PA).
Fingertip focus control provides fine adjustments, and the patented autoexposure
system rapidly adjusts to variations in light for properly exposed images.
I assume Billingham uses one of those autofocus and autoexposure
pocket cameras; in many cases it looks as if he was none too sober himself when he pressed the shutter button.
The company hopes that Captiva's advanced features (including autofocus and autoexposure
), coupled with a $30 million marketing and advertising campaign, will draw new consumers to the instant photography category.
Many camera models have no manual override for exposure (you cannot control the camera's shutter speed and aperture), so you have to rely on the autoexposure
Fingertip focus control provides fine adjustments throughout every procedure, and the patented autoexposure
system rapidly adjusts to variations in light for properly exposed images at all times.
I found I could remove the viewfinder, exposing the ground glass screen without disabling either the autofocus or the autoexposure
. This enables me to shoot low-level shots without a right-angle finder and also to photograph people without attracting attention.