Klassika Posted January 14, 2017 Share #1 Posted January 14, 2017 Advertisement (gone after registration) Hello Leica-users, I recently bought a new M-P 240. Now I have a question. When I look trough the OVF and compose and focus I get a correct and balanced picture (1/60th). However if I use the EVF-2 and look through te viewfinder and want to make the same picture, the metering is much lower (1/8th). This is only indoors. Light metering mode is set to Classic and exposure metering is set to Center-weighted. What am I doing wrong, please help. Quote Link to post Share on other sites More sharing options...
Advertisement Posted January 14, 2017 Posted January 14, 2017 Hi Klassika, Take a look here OVF versus EVF-2 metering M-P 240. I'm sure you'll find what you were looking for!
Exodies Posted January 14, 2017 Share #2 Posted January 14, 2017 (edited) The two light metering modes (OVF and EVF) are not the same. In classic, centre weighted the light is measured as it is reflected off the shutter curtains when live view is off. When live view is on either the measurement is taken from light reflected off the sensor or the sensor reports the measurement (I don't know which). But the difference you report is much greater than one would expect. Perhaps the camera is faulty. Do you have manual ISO or automatic and what are your parameters for automatic ISO? Edited January 14, 2017 by Exodies 1 Quote Link to post Share on other sites More sharing options...
Klassika Posted January 15, 2017 Author Share #3 Posted January 15, 2017 Thank you Exodies, Iso is on Auto and maximum auto iso is on 3200. I don't think the camera is faulty, because outside the metering readings are the same. Maybe I don't really understand the difference between the two metering modes. Quote Link to post Share on other sites More sharing options...
Exodies Posted January 15, 2017 Share #4 Posted January 15, 2017 (edited) What is maximum exposure time set to in the ISO menu? There is also the problem of exposure compensation - if you have set the option to control this just by turning the thumb wheel on the back of the camera (as opposed to holding the front button in and then turning the thumb wheel) - then you might find that by handling the camera you unknowingly turn the wheel. Oh, how did the pictures turn out? Was the EVF one overexposed? Edited January 15, 2017 by Exodies Quote Link to post Share on other sites More sharing options...
Exodies Posted January 15, 2017 Share #5 Posted January 15, 2017 (edited) I just tried this on my M. Classic centre weighted, pointing camera at room light, ISO 200, 1/12 sec OVF, 1 sec LV. LV picture is much brighter (as you would expect with fixed ISO...). It's as though the centre used in LV is much larger than that used in OVF mode. I suppose that outside the light is more uniform and so doesn't show the difference in the size of the centre so much. My conclusion - stop worrying about it. Exposure is an art not a science. This is just another variable you have to contend with. ETA: I always use spot metering in LV. Edited January 15, 2017 by Exodies Quote Link to post Share on other sites More sharing options...
Klassika Posted January 15, 2017 Author Share #6 Posted January 15, 2017 Yes Exodies, You're absolutely right that exposure is an ART, that one has to learn by doing. Thank you much for your tests, thoughts and advice. Greetings, Klassika. 1 Quote Link to post Share on other sites More sharing options...
rsolomon Posted January 18, 2017 Share #7 Posted January 18, 2017 Advertisement (gone after registration) ETA: I always use spot metering in LV. Same here Quote Link to post Share on other sites More sharing options...
Overgaard Posted January 18, 2017 Share #8 Posted January 18, 2017 If you have the camera set to Classic Metering it should be the same. But if you have Advanced Metering on for EVF, then that would be the reason for the difference. I don't see how it would change, unless you have user profiles or something. Quote Link to post Share on other sites More sharing options...
Exodies Posted January 18, 2017 Share #9 Posted January 18, 2017 If classic metering works the same in OVF and LV mode then there will be a difference. One measures light reflected off the shutter, the other measures light reflected off the sensor which is further away so a larger area will be sampled. Quote Link to post Share on other sites More sharing options...
pop Posted January 18, 2017 Share #10 Posted January 18, 2017 ...., the other measures light reflected off the sensor ... What makes you think so? Classic metering measures the light reflected by the shutter. Quote Link to post Share on other sites More sharing options...
Exodies Posted January 18, 2017 Share #11 Posted January 18, 2017 If that were the case there would be no reason for LV and OVF metering to differ. The shutter is open in LV. Or are you saying a LV shot goes: close shutter, meter, open and close shutter, open shutter? That doesn't give you much time to hit exposure lock. Quote Link to post Share on other sites More sharing options...
pop Posted January 18, 2017 Share #12 Posted January 18, 2017 Do you happen to own an M? If so, you can easily switch it on, turn LV on and press the shutter. Then you might observe that in LV mode the camera really will first close the shutter before taking the exposure. The M does not have an electronic shutter. Quote Link to post Share on other sites More sharing options...
Exodies Posted January 18, 2017 Share #13 Posted January 18, 2017 I have an M 240. In LV if you half press the shutter the curtain stays open and the exposure is locked. I can't understand why this is causing so much chatter. Do you fail to reproduce the OP's problem? Quote Link to post Share on other sites More sharing options...
Klassika Posted January 18, 2017 Author Share #14 Posted January 18, 2017 Gentlemen, please. I'll give you an example when I get this big difference in measuring exposure. In the room I measure on a table lamp with OVF from about 3 meters, the exposure meter says 1/ 24th. Now I switch to LV and use the EVF or the screen, the exposure meter says 1/ 8th. But when I measure another lamp in the room that reflects the light to the wall behind the lamp, the readings from the meter with OVF and LV, are exactly the same. So maybe in darker situations it is better to use spot metering when using Live View. I wish to thank Mr. Overgaard, Mr. Pop and Mr. Exodies for your kind reactions and advice. Greetings from Maastricht in The Netherlands, Klassika. Quote Link to post Share on other sites More sharing options...
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