ePHOTOzine has partnered up with to bring you a selection of Gossen Lunasix 3 instruction manuals and related photographic literature. Gossen Lunasix 3, although built around the early ’70, is a very The Gossen Lunasix is a purely passive circuit, i.e. there are only .. Hello, at last I´ve been able to calibrate mi gossen Lunasix 3 with your instructions. In the. Maker: Gossen. Dates: Variants: Lunasix, Lunasix 3, Lunasix 3s. Type: Ambient exposure meter.

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This article describes, how to deal with this problem. Use a needle or a sharp ounasix blade to lift the plate through the serial number opening at the back. Thanks in advance, Augie.

Gossen Lunasix – – The free camera encyclopedia

HI, Art I am using 2 pcs. Inspect the left-top side of the meter. Can you tell me how I could test the individual pots?

At 10 I can adjust the slope pot to read 10, but at 5 I have to turn the offset pot all the way down just to get the unit to read about 6. The left pair is responsible for low light rangeno ND filterthe right pair — for the high light rangeND6 filter in the light path. The Gossen company has produced an adapter to allow the use of a pair of easily-obtained silver-oxide cells in these meters.

They are visible on the adjustment pods picture above, and the screws holding the bottom part travel through them. Can you recommend a specific diode for the job, which did you use in the example posted above? Hi Mark, I was thinking about using LD low dropout voltage regulator instead of your solution.


Calibrating Gossen Lunasix 3 (LunaPro)

But adding diodes for the voltage drop from 3. An observant reader might have noticed, that the CdS cell does not change during calibration. March 29, at Your points, marked as red crosses, should not stray too far from the green line, if they do, either you did something wrong, or the CdS cell is cooked, or I screwed the XLS.

What you need to know is that the switch not only moving the ND filter, it also changes the connections within the meter.

Equally, producing an accurate EV0 for calibrating low-light scale might turn tricky, so you can instead cheat, put the filter in decoupled from its drive spring and measure EV6 instead. May I suggest you to write an article about those old selenium meters and the way to restore them with the electronic components available today? Remember, that the upper scale end is more accurate and around cross-over between the scales just take the reading from the lower range as more reliable.

Pointer needle with mechanical computer Sensor: Hi, Pete Many thanks for your advice and help.

Gossen Lunasix 3 Instruction Manuals

April 4, at Measurement is made by depressing the rocker switch in one direction for low light, and the other for daylight. Being a purely passive, resistive, linear circuit it has no principal problem with a slightly higher battery voltage, besides showing wrong exposure values of course. When I kept turning the zero screw clockwise, the needle swinged to the left, then it swing back to the right.

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Silver oxide cells have equally stable voltage output and are based on the same principle, as mercury batteries, the main difference being use of silver in place of mercury, which makes these batteries more expensive to manufacture. You will notice back of the battery compartment and two wires coming from it.

Thanks, that was a mistake: And have yourself a great day. March 28, at This entry was posted in rants etc.

Both scales do give readings. I suggest a different approach: Lunasix 3 manual Here are all the pages of the operating manual for the Gossen Lunasix 3 photographic light meter.

Hi, I hope you can help me with this. If you did your homework right, it will be almost parallel to the sample data, and it will be not too far from it either. I have created a graph of my results, which will hopefully be readable. The range of adjustment is lunaslx by design to accomodate the variance and normal i. The corresponding scale points that result in the same effective illumination of the CdS sensor are listed here:.