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Help choosing light meter



I am looking at several Gossen light meters to use in low light and night photography. The Digisix measures to an EV of 0 while the Luna Pro S measures to -4EV. ARe both adequate for my purposes or do I need to go with the Luna Pro S?


Well-Known Member
> I have a Minota IIIF which is about ten years old. I don't think it is the IIIF color meter which is advertised in B&H for over $900. I'd like to know what it is worth and might want to sell it for some reasonable price as I do not use it. It is in perfect operating order, looks like new, and has its case and manual with it. I got it as part of a $4700 package of Hasselblad equipment I bought a couple of years ago. I prefer to use a much simpler meter.


Hi Susan,

I have a Digisix and it's a neat little meter even though changing ISO and operational modes is a touch fiddly. I can't recall the specs precisely, but I've a feeling that it's a couple of stops more sensitive in reflected mode than in incident mode. However it doesn't hold any significant advantage over the meter in my RTS II, and I only tend to use it when I want an incident reading (or with other cameras -- it's a great partner to my Leica M6).

For low-light work (dawn/dusk and indoor artifical light) I expect you will be quite happy with the Digisix, but I would hesitate to recommend it for full night photography. For that I would suggest the Luna Pro S or better yet the Luna Pro SBC (or the Pro F which is like the SBC but adds flash metering, if that's useful to you, and incidentally there is now a Digiflash which is the equivalent of a Digisix but with flash metering).

Of course in night photography metering is much different than in normal or low light, in that the subject is often distant and tends to consist of pinpoints or small areas of light. Incident metering is usually irrelevant and "reflected" readings (emitted, really) won't necessarily be much good either. There are many rules of thumb that can be applied to useful effect, and there is a thing called The Black Cat Extended Range Exposure Guide which summarises many of them on the back of a simple rotary calculator that can be used like the scale of a traditional meter. I haven't used one myself, but it seems like a good idea and is widely recommended on Have a look here for further details:
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-= mike =-


You're welcome. BTW I had a quick look at the manual last for the Digisix night and it quotes a 0EV minimum sensitivity, with no mention of incident/reflected mode. In fact now I think about it, I know that the unit will not produce a reading below zero in either mode, so that's that. Still a nifty little meter though.

Take care

-= mike =-