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Firmware update - over exposure?


rochus

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I am wondering if there is a little misunderstanding about the 'auto' button in Lr 5. Of course it will try to create a even histogram that is what it is designed to do but that doesn't mean it will make for the right exposure. if the scene is largely dark as in a night scene it will overexpose. Even matrix/evaluative metering can get it wrong in extreme or unusual lighting situations. What I have noticed though is that the there are differences in the way the camera reads metering in Classic mode and advanced mode especially when closer to object basically the centre-weighted areas are not the same so different readings can be obtained so I am wondering if the people posting here are using 'classic' or 'advanced'' mode and if in advanced mode are you in ,spot, centre-weighted or evaluative modes?

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I do see the effect in all 4 metering modes, so don't think it's dust on the LEDs. Sure only in spot mode and having the measurement (center) area completely exposed to an 18% surface it's reproducible. For real shooting I only use the classic mode and the "find a 18% like area for exposure measurement and re-framing" method in critical light situations. Do have many years experience with analog M's, experimented as well with the Zone system, so think it's not the wrong set up I use.

Got the M beginning of May and didn't even think about this topic before upgrading the firmware to 2.xxx Again, can be solved by pre-selecting an exposure compensation of -2/3 ... -1 like I learned many do. Just it's not completely satisfying as you lose some margin towards the lower end of exposure compensation if the mid-point is at -2/3. Especially as the M has a lot of reserve in the shadows I would more like to see it the other way around.

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Guest WPalank

The LR4 03 5 is a Red Herring IMHO. When it happens, I look at my LCD and Histogram, the image is blown-out. Easy Diagnosis. It looks the same in LR, no better, no worse.

It does NOT happen when shooting MANUAL in my Studio.

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I shoot advanced mode and use the "Auto" for all my shots and it works great... if,this helps anyone.

 

I advise not to use advanced mode since it uses a lot more energy and has shutter delay...

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I advise not to use advanced mode since it uses a lot more energy and has shutter delay...

 

Hi Jip - I am not sure why you would advise against using Advanced light metering mode. I understand that there is a short delay for the shutter to close in Advanced mode. And, of course in Classic mode the shutter is already closed so, it is a little faster.

 

But, I haven't noticed that Classic mode uses a lot more energy. I'm not sure why it would use "a lot more energy.?"

 

The result I get from Advanced mode (in multi-field exposure mode) is so good for a automatic camera metering system that I find myself going fully manual much less frequently then I did with the M9. The metering mode for the M9 was so poor that I always metered manually and never relied on the camera.

 

I would advise trying the Advanced mode using the multi-field mode. Leica has done a great job implementing their algorithm. Give it a try.

 

Rick

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  • 4 weeks later...

I find that the 240 is a touch overexposed, just by 1/3 stop. I generally set the ev to -1/3. I also did that on the m9. With the 240 using LV or EVF , if you push the info button you can preview your exposure. If you press the shutter half way down you can preview the actual frame exposure. Best, Dan :)

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I have used -.3 and -.7 (lens dependent) habitually on my M since the latest f/w ...... but I think the 'problem' was there before but to a lesser extent.

 

AUTO tone in LR is useless for adjusting brightness...... but great for producing semi-HDR like images ........ press AUTO then reduce the brightness down to normal .... the result is often surprisingly good :D

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Advanced eats up battery like crazy. It also caused big delays! You can still shoot , "spot, center-weighted, and multi-field" by going to the "set" menu and choose one of the three. So I always leave it on "classic" . When you use live view or the EVF, the camera will automatically change to "advanced", and when you get out of live view or EVF the camera will automatically change back to "classic". So I am wondering if anyone sees the use of the "advanced" setting???

 

Also, about over-exposure: It never happens with the "A" mode and "center-weighted". If I change the exposure mode to "multi-field" I do have to back off the exposure by -.3 stop.

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I have just tried mine, with FW updated and exposure on classic mode is perfect until wider than 35mm lens and then underexposes slightly on wider lenses (getting too much sky in). In advanced/spot mode, exposures at all focal lengths are as good as I would expect out of the camera.

 

Wilson

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