For Sale FS: Gossen Luna Pro Light Meter with Case

[Jon Shiu]

In good working condition. Requires 2 625 type 1.3v batteries (ie wein cells, or adapters...) -- not included.

I tested this with some alkaline cells, and it worked, but metered values were too high.

$25 plus postage.SOLD

 

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[hap]

this is a pretty good deal. the problem is there are no techs out there that can or will adjust a Gossen Meter. there was a very old guy in LA who made a living out of doing just that.....but he retired last year. Gave me a referral to SpectraCine... they laughed. Contacted Gossen in Germany for service....they lacht. "We don't care about our old shit". turns out after fiddling around, the contacts needed some cleaning and my model has an adapter for 2 SR44 and unlike yours, it is printed on the back (SR44).

 

[Moose22]

I literally JUST bought one a month and a half ago, or I'd snag it myself. These are great. I carry mine rather than my large and too expensive Sekonic.

You can get 625s. It will just be running too high a voltage with 1.5v alkalines, which would explain the high values. At this price this is a deal. And I bet with 1.35v batteries it will be well within range to calibrate.

Good luck with the sale.

 

[hap]

I think that alkalines that fit with 1.3v would work well. My guess is that the meter does not drain batteries like a camera so voltage relatively stable.

 

[beemermark]

I was lucky enough to get an adapter from Gossen to use S76 batteries but I don't think they sell them anymore. I like this meter over my digital meter(s) because it is so much easier to read F stops for highlights and shadows. Maybe someone else makes an adapter?

 

[hap]

My adapter, provided by Gossen, is some sort of plastic sleeve that slips into the battery well and with contacts that allow for the use of 2 standard silver oxide batteries. It can also use the 1.3v alkalines without the adapter.

 

[binglebugbob]

I'm not aware of any 1.3v alkaline batteries. As far as I know, they're all rated at 1.5v. Zinc Oxide batteries put out about 1.4v.

Best substitute for 625 mercury batteries is probably to order the brass (?) 625 to 675 adapters from China. Then you can use 675 zinc oxide hearing aid batteries that come in an inexpensive pack (of 10 or so) at your local grocery or pharmacy..

Some meters have a circuit ("wheatstone bridge") that doesn't depend on exact voltage to work accurately. I don't know if the Luna Pro is one of them or not. If Gossen says it'll work accurately with silver batteries (1.5v) then it may.

 

[hap]

there was a thread I posted on RFF a number of months ago when I was having trouble with my Luna Pro. on the back it has printed 2 SR44 1.55v . i believe someone responded saying that some model variations had this factory modification. I searched high and low for someone to work on it (see above). In the end I just vigorously cleaned the contacts inside the battery compartment, placed 1.55v standard batteries and away it went.

 

[runswithsizzers]

You can get an adapter to replace PX625 batteries with commonly available silver oxide 386 batteries. The adapter also changes the voltage of the silver oxide battery to the correct voltage (1.35V). The adapters are avilable <here> and I think you would need two of them for the Gossen meter.

If you are clever with your hands and can use a soldering iron, there instructions online telling how to make your own adapters.

 

[Pieter12]

there was a very old guy in LA who made a living out of doing just that.

He wasn't that old, but he did retire. His business was the repair and calibration of light meters, not just Gossens. I don't think there is anyone else out there doing that anymore, except Spectra. But it doesn't sound like they were interested in your business.