Light meter calibration revisited
Over time I’ve written a lot of articles on the use of the light meter, and also some about the calibration of the meter. This has fueled some discussion and also made some people doubt their methods even more than before, so I thought that it was time for a revisit of this topic.
Why calibrate the meter
In fact you are not calibrating the meter, but the combination of the meter and the camera/lens combination.
Remember that every camera can be different, and that if ISO100 is correct it could be off for ISO200.
Knowing all this makes it easier to understand why the meter out of the box is not 100% accurate.
The quick and easy way
I’ve been experimenting a lot with the calibration process and found that if you calibrate to a QPcard101 and get the numbers to read app 128.128.128 for the gray patch you are pretty accurate. However there are some things you do have to realize.
