In this month's column, readers of the Journal will meet old and new photography words. The column will vary at least slightly month by month.rn1. Analog/digital converter - Inrndigital imaging, the electronic built into a camera or scanner that converts the analog information captured by the sensor into digital bits that can be stored in as an image bitmap.rn2. Average metering - A light measuring device that calculates exposure based on the overall brightness of the entire image area. Averaging tends to produce the best exposure when a scene is evenly lit or contains equal amounts of bright and dark areas that contain detail. Most digital cameras use much more sophisticated exposure measuring systems based on center-weighting, spot-reading, or calculating exposure from a matrix of many different picture areas.
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