Bug ? Awkward Exposure behaviour

[ChewbeeDoo]

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Greetings to all,

 

I am the new happy owner of a used M240, my first Leica after years of desire.

 

Yesterday, I notice a very strange behaviour. I used Auto ISO, A priority. I took 10 or 15 photos and noticed this:

Each photo information was exposed with an exposure compensation which was not the value seated (-0,7) It can be -1.7 it can be something else ... 

I turned off Auto ISO ==> no impact. At the end I suspected bracketing, which has few options (mode, number of frames, on/off)

I had to turn off the two lines to get rid of the strange behaviour ..

And other way to say it is that, it was taking only one picture but with a different exposition value !! 

Did one of your ver notices this behaviour ? 

And no I checked I did not inadvertently touch the wheel

Many thanks and kind regards 

Edited June 25, 2024 by ChewbeeDoo
not touched the wheel

[jaapv]

You may be a inadvertently turning the the thumb wheel. 

[Viv]

8 minutes ago, jaapv said:

You may be a inadvertently turning the the thumb wheel. 

Most likely.

[Jean-Michel]

5 hours ago, Viv said:

Most likely.

Fool-proof method to avoid moving the thumb wheel inadvertently: add Steve Barnett's " Thumbie " to the camera. The thumb wheel remain easily accessible but about impossible to turn by mistake.

[dugby]

16 hours ago, ChewbeeDoo said:

Greetings to all,

 

I am the new happy owner of a used M240, my first Leica after years of desire.

 

Yesterday, I notice a very strange behaviour. I used Auto ISO, A priority. I took 10 or 15 photos and noticed this:

Each photo information was exposed with an exposure compensation which was not the value seated (-0,7) It can be -1.7 it can be something else ... 

I turned off Auto ISO ==> no impact. At the end I suspected bracketing, which has few options (mode, number of frames, on/off)

I had to turn off the two lines to get rid of the strange behaviour ..

And other way to say it is that, it was taking only one picture but with a different exposition value !! 

Did one of your ver notices this behaviour ? 

And no I checked I did not inadvertently touch the wheel

Many thanks and kind regards 

Over the support life of the M240 there were ten publicly released versions of firmware, What firmware version is in your M240 ?

 

[ChewbeeDoo]

On 6/26/2024 at 3:28 AM, dugby said:

Over the support life of the M240 there were ten publicly released versions of firmware, What firmware version is in your M240 ?

 

Hello,

 

Thank  you for your message.

The latest version I guess ==> 2.1.0.0

I solved the issue  I guess, It it odd as behaviour and not a bug (hardly a feature tho  

If

• you have  expo compensation set to -0.7
• your setup are like in the menu  (3 frames) and
  • you press the trigger   ==> you will get one pic at -1.7, if
  • you click again              ==>  -0.7, and
  • again , one pic at +0.3

So the bracketing  is manual but effective, despite the last line set to "Off", which only defines if the camera takes 1 or the N frames automatically 

So you have to put the first line to zero 

 

Thanks to all for your help 

Edited June 27, 2024 by ChewbeeDoo
SOLVED