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Leica's website for the M10 has a picture shot at ISO 50K by Maik Sharfscheer. I have yet to take the camera out and do some real work with it, but was interested in hearing about the results of the higher ISOs, specifically 6400 and above. How high up on the ISO can the M10 do before the photos are unusable?

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I feel, 12500 is pushing it if you intend to process the photo further (details from shadows, increase exposure etc) ISO12500 or 6400 is not very forgiving with underexposed/overexposed images.

 

But you can even try on stop higher if you are ok with properly exposed OOC shot. (No PP. may be some NR)

 

 

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"Unusable" is a subjective measure. If you're being paid $5000 to capture someone's wandering spouse with a paramour on a dark street, anything that shows faces, and can be used in court, is "usable." ;)

 

If you want totally noiseless pictures, anything above ISO 400 may be "unusable." (In fact, 200 already shows more shadow noise than I'd like, heavily processed for maximum DR).

 

http://www.l-camera-forum.com/topic/268833-iso-100-on-m10/?p=3224245

 

I would say that on the M10, ISO 10000 is "acceptable" with correct exposure.. The noise is a crisp, clean, even texture.

 

ISO 12500 is borderline, in that "electronic banding" is right below the surface, ready to pop out with any attempt to "save" the shadows. But if you stick with the "chalk and charcoal" tonality of film pushed to ISO 3200 or above, it is fine. My "manual" ISO is set to 12500, because I know that that will "just barely" work, in most cases, and with careful exposure.

 

Attached was shot at ISO 12500, f/2, 1/125th sec. 50 Summicron DR. +0.33 exposure comp for the white fur in the metering area. 5 points of color NR, no luminance noise reduction. For me, for dark-and-dirty available light, that is emminently usable.

 

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It's not so much subjective as well as depending on the situation. 50K ISO with an evenly daylight lit is less problematic than a contrasty night capture where you would also wish the shadows to speak

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I have set the max ISO to 20000. For me this is the max in order not to loose a shot. You always can delete a picture during postprocessing but I prefer to have that shot.

Has anyone done a comparison test for shooting at ISO6400 and exposing in PP (+2 stop for ISO 20000 equivalent)? 

Edited by jmahto
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I often use 3,200 and the results seem to be quite similar to ISO on a M 240. ISO 25,000 produces quite "usable" images. I have many photographs taken in flim days using T-Max 3200 that show visible grain, low er resolution, but were reproduced for publication, often in high-quality printing and that also are in museum collections.

 

Photographs at ISO 25,000 on the M 10 (in color) are very much better technically.

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My short experience with M10 file converted to monochrom.

 

As original Monochrom user, even if I only used once or twice with MM at 10 000 ISO, I wanted to see what M10 at 10 000 ISO look like.

 

 

 

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M10 at 10 000 ISO, 2.8/21 Asph, interior weak-one-lamp-lit, crop 100% of very large image

 

Aiming to "grain and contrast", this (for me) is acceptable but only in emergency or "artistic" use :p .

 

 

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Has anyone done a comparison test for shooting at ISO6400 and exposing in PP (+2 stop for ISO 20000 equivalent)?

 

yes, I have tried it today with pulling up to 3 stps in LR. You wanted to pull from 6400 to 25000 ISO. I did not quite this but somthing similar and I will continue testing.

 

4 Shots:

 

1/350s f/1.4 and ISO 1600, 3200, 6400 and 12500 were 12500 resulted in the correct exposure and the other setting resulted in underexpusure of -1, -2 and -3 stops.

 

My finding is that the sensor is almost ISO invariant. I got even the impression, that the shot at ISO 1600 had less noise and crisper details than the 12500 picture. This was a very promising test.

 

How did I test? I had the M10 on a tripod. Then I shot the 4 pictures and imported into LR. In LR I saw that I had different White balance setting. I adapted those so that all pics had the same values. Then I set the noise controllers both to zero. Then I pulled up the exposure by 1 resp. 2 resp 3 stops. This was the result that I compared.

 

If one wishes I can upload the pictures.

Edited by Alex U.
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Here the picture to compare. Have a look yourself: The EXIFs included. Note that compared to the Test methodology above in the published pictures i applied moderate noise reduction: Same for all 4 pictures: See the screen shot.

 

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Welcome, dear visitor! As registered member you'd see an image here…

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Welcome, dear visitor! As registered member you'd see an image here…

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Welcome, dear visitor! As registered member you'd see an image here…

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Welcome, dear visitor! As registered member you'd see an image here…

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If you wish I can put the raw files onto dropbox . . .

Edited by Alex U.
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Bildschirmfoto 2017-05-07 um 21.41.14.png

 

If you wish I can put the raw files onto dropbox . . .

Yes. Please.

 

Can you also have one shot at ISO 200 underexposed by 4-5 stops? On M240, pushing ISO200 shots by 4-5 stops in PP highlights green channel disproportionately. I would like to see how M10 behaves in similar push.

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