Spot meter
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| Soligor II, Pentax Analog, Pentax Digital, Minolta Spot Meter F image by rst12 (Image rights) |
A spot meter is an exposure meter that measures reflective light in small more narrow portion of a scene. Compared to more common reflective meters that measure in about 25 to 30 degrees, spot meters typically measure in 1 to 5 degrees. This makes it more accurate for exposure as averaging contrast variations in a subject may affect the exposure reading. This narrow measurement presents other problems as it may not represent a scene correctly. The Zone System was developed as a way to calculate spot meter readings.
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