Originally Posted by
Alan9940
Ian,
Here’s the way I meter with my Sekonic L558:
1. Meter dark area where I want detail and store value.
2. Meter light area where I want detail and store value.
3. Hit AVE button, then I hold down the measure button and scan the scene watching the EV difference from the average.
4. Adjust exposure accordingly.
For example, if during the scanning I find another dark area that reads, say, -2.9 then I make a decision. If I want detail in that area, the average reading will cause that area to be in Zone II so I give a bit more exposure. Harder to explain than to do...
And, as others have pointed out middle gray—18% reflectance—is not necessarily Zone V. Some meters use 18% for middle gray while others use 36%. I have to set the ISO on my Sekonic to half that of my calibrated Pentax Digital spot meter to get the same exposure readings.
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