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Leica M6 TTL meter problem


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Hi, the meter ( or ISO setting wheel) on my M6 ttl is consistently off by 2 stops under.

I have verified this by comparison with my Sekonik L-508 and other digital M's.

The meter itself works fine but I have to set the ISO dial at iso 100 if I am using TRI-X at 400 ISO and ISO 25 if I am using 100 ISO film. The dial is aligned the correct way on the rear of the camera and I have cleaned the gold contacts. Any ideas what is causing this? Many thanks.

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Some substitute batteries replacing older Mercury types have different characteristics and can cause meters to operate in a different way. It would be best to ask Leica Customer Support for advice before sending the camera in for inspection.

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Hello,

 

The problem with unstable battery power is true mostly for the mercury replacement zinc-air cells, but the M6 TTL runs on contemporary SR44 or similar. They are usually not so prone to these issues. Prefer the silver/lithium type and avoid the alcaline one, the charge of the latter tends to vary more when declining.

 

Before indeed calling CS, I would check and clean (very fine sandpaper or fiber brush) the battery contacts (camera and cells) to eliminate possible traces of corrosion. Perhaps there's also a local store that can take a look.

 

Alexander

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Hello Everybody,

 

For cleaning electrical contacts or/& battery contact surfaces: An ink eraser in the form of a pencil which can be re-sharpened in any regular pencil sharpener is normally sufficient. Sand paper is generally too aggressive & unnecessary.

 

A soft brush to brush out any residual odds & ends, both before & after using the eraser, coupled with a person's breath to help, can also be beneficial.

 

In restoration & maintenance very often "less is better".

 

Even if it has to be repeated.

 

Best Regards,

 

Michael

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Hello there,

 

Sure, cleaning contacts needs to be done carefully. When I used an ink eraser I sometimes had a doubt about a rubber smear left behind... With sandpaper it's sand and streaks. Very fine steelwool, like for wood polishing, works well.

The fiber brush I'm referring to is a pen with a small retractable glassfiber brush included. I bought one decades ago from the German brand/distributor of lab and photo goods 'Kaiser'.

 

Cheers,

Alexander

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I had the same issue with my TTL a year ago and after some attempts of battery change and cleaning opted for the CS treatment. They exchanged some electronics and applied the usual treatment... Camera works like a breeze since.

 

Regards

 

Michael

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