Quote Originally Posted by Steve Smith View Post
Then it's using the wrong units as EV (Exposure Value) has to take account of shutter speed and aperture. In fact that's all it is, the level of exposure. It does not take into account the amount of light.

However, LV (Light Value) is a measure of the light only.

At ISO 100 the figures are the same.

In the light meter's defence, it probably does state that all EV readings are for ISO 100 in the instructions but technically, using EV to represent light levels is not correct.

It's like measuring the length of a brick wall in kilogrammes. Only valid if you know the cross sectional area and the density!

You're right about not being right. The Minolta flashmeter III when in ExIN mode. It displays play the EV value in ambient light mode and yes it's the EV value as it would change the value if you change the ISO for the same scene brightness. When the meter is in ExIN mode and it measures flash in either cord or non cord mode it display AV value (the number of stops from f/1.0). So when in this mode and the meter say EV9 it always means f/22.