Re: RE: Manual Light Meter

[sleeping]

I don’t know that particular model, but in general there are probably 2 needles on the display. One moves with the light level, and th other you turn to match it. When the needles match, the dial indicates the correct exposure. Depending, you may also need to turn a ring on the main dial to set the ISO.

If it doesn’t take batteries, it’s using a selenium cell to generate a tiny current based on the amount of incoming light. Those tend to degrade over time, but with handheld meters there’s a better chance of it still working than the ones built in to cameras, which get exposed to a lot more light. You need to check it against a good meter before trusting it, though (or you can get an estimate by using the sunny 16 rule – if it indicates 1/125 & F16 @ ISO 100 in direct sunlight it’s close to correct.