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Shutter rating of the M240


arthury

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It was said to be 100,000 for the M9 and M9-P. Mine have shot 60,000 and 180,000 and had absolutely no problems.

 

I guess they just have to give a number, and they would give one as reasonable low as possible so as to not have to guarantee forever but for reasonable use.

 

Thank you, Thorsten.

Were these numbers officially published somewhere?

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My theory is that they made this to support the used prices of their equipment.

 

It's the same as the way Rolls Royce don't publish how much horse power their cars produce, it is described as 'sufficient' :) As Leica don't make the shutter but import it from Copal I'd assume it would be up to Copal's (and therefore similar to Nikon's) pro specification, but not providing a guide is remiss when so many people look at buying a Leica as a long term deal (until the next model is released at least).

 

Steve

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What I meant was this :

Cheap used cameras means it's (a little) harder for Leica to sell new ones.

There always seems to be people who sell their Ms with less than 3000-5000 actuations no matter how old the camera.

Next to these, a guy selling a normally used M with 15000 clicks has to offer a discount to stay competitive.

 

> used Ms with a reasonable number of actuations (15000-20000) become way too affordable to justify buying a new one. (for people who reason like that. Of course there is people who always buy new whatever the discount on used stuff)

 

If I was Leica, I would have stopped providing actuation counts for that reason. But your rolls Royce comparison sounds just as likely, and I agree that there's no real reason for a shutter rating (on any pro camera for that matter).

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The reason for my asking was due to some occasional rumbles about M8 shutters breaking. I did not keep my M8 long enough to see any of these complaints and my current M9 has been fine for years.Wasn't the M8 Copal shutters, too?

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You believe wrongly. The only reason the M8.2 was fitted with the same shutter running at half-speed was because users found the original shutter too noisy.

As a matter of fact, as I recall it, the catastrophic shutter failures, few as they are, mostly ocurred on the slower shutter. Basically the shutters of M8, M8.2 and M9 are identical with exception of the running speed.

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What I meant was this :

Cheap used cameras means it's (a little) harder for Leica to sell new ones.

There always seems to be people who sell their Ms with less than 3000-5000 actuations no matter how old the camera.

Next to these, a guy selling a normally used M with 15000 clicks has to offer a discount to stay competitive.

 

> used Ms with a reasonable number of actuations (15000-20000) become way too affordable to justify buying a new one. (for people who reason like that. Of course there is people who always buy new whatever the discount on used stuff)

 

If I was Leica, I would have stopped providing actuation counts for that reason. But your rolls Royce comparison sounds just as likely, and I agree that there's no real reason for a shutter rating (on any pro camera for that matter).

Hmm.. That is in contradiction with Leica's product manager saying, when asked about a cheaper entry model : "We regard the used cameras as the entry model to the M system..."

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You believe wrongly. The only reason the M8.2 was fitted with the same shutter running at half-speed was because users found the original shutter too noisy.

As a matter of fact, as I recall it, the catastrophic shutter failures, few as they are, mostly ocurred on the slower shutter. Basically the shutters of M8, M8.2 and M9 are identical with exception of the running speed.

 

So, what exactly were the causes of the shutter failure in the M8?

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Exactly the same as the M8.2 and M9 - mostly unknown cause.

Without firm data I would say that catastrophic mechanical failure would be most likely caused by a piece of grit between the shutter blades - there is no protective mirror in front- and the most common shutter error would be stuck teflon “fingers”.

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Exactly the same as the M8.2 and M9 - mostly unknown cause.

Without firm data I would say that catastrophic mechanical failure would be most likely caused by a piece of grit between the shutter blades - there is no protective mirror in front- and the most common shutter error would be stuck teflon “fingers”.

 

Blowing the sensor with a Giotto rubber bulb only drives dust/grit off the sensor but they may still fall into the back and return at the most opportune moment to lodge themselves on the shutter.

 

Given that this is the most likely cause, what's the best way to prevent this? Anyone?

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Blowing the sensor with a Giotto rubber bulb only drives dust/grit off the sensor but they may still fall into the back and return at the most opportune moment to lodge themselves on the shutter.

 

Given that this is the most likely cause, what's the best way to prevent this? Anyone?

 

Never change your lens.

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The M 240 has a 'dual' type shutter and when used in live view, multi field metering or spot metering modes, the shutter has an "open - close / open - close " action … as distinct from normal single "open - close" action when in regular optical / rangefinder mode. Thus if used in e.g. spot metering mode all the time the shutter actuations are doubled.

 

dunk

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