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Response to EV values on a light meter

from Keith Nichlls (knichols@iopener.net)
When you say the "reading comes in EV values" do you mean that is the only way exposure info is expressed? The exposure value (EV) appears on most light meters, but it seems to me it is usually an adjunct to the more prominently displayed f-stop and/or shutter-speed readings. Examine your meter and see whether you get both forms of information, either at the same time or one or the other as you choose. The relationship among f stop, shutter, ISO (or EI), and EV are evident from manipulating the various settings on the meter and seeing how the others are affected. The EV is an arbitrary number identifying a particular light value and thereby a set of equivalent f-stop/shutter combinations. I have a Rolleiflex TLR on which EV is used to adjust how the shutter and aperture lock together so that changing one automatically changes the other. This is of limited value to me, however; so I've never found EV very useful.
(posted 8536 days ago)

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