What's the highest ISO before the M10 enters "push" range?

[dmakphoto]

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So on my M 240 when you go above 3200 ISO the camera lets you know that the ISO settings above are "push" settings. At what point in the M10 does this become the case where the sensor isn't receiving anymore amplification and is instead doing in camera pushing of the RAW file it's capturing? From my experience on the M 240 it's better to push the files in Lightroom later rather than have the cameras processor do it and I imagine it's the same for the M10.

[a.noctilux]

Hello, not as simple as that seems because each ISO increasing looses some DR.

You can make your own opinion with the link provided ( link to photonstophotos ), here choosing M10 and M240 in the chart

https://www.l-camera-forum.com/topic/307028-pushed-iso-vs-native/?tab=comments#comment-3928911

I assume that if your ISO is 3.200 on M240, the M10 would be 12.800 as hard bet, looking at that chart.

This bet is not correct if we add some parameters ( like "grain", noise, banding risk, DR, etc.) = so no simple answer to your simple question.

 

 

 

 

Edited April 11, 2020 by a.noctilux

[jaapv]

1 hour ago, dmakphoto said:

So on my M 240 when you go above 3200 ISO the camera lets you know that the ISO settings above are "push" settings. At what point in the M10 does this become the case where the sensor isn't receiving anymore amplification and is instead doing in camera pushing of the RAW file it's capturing? From my experience on the M 240 it's better to push the files in Lightroom later rather than have the cameras processor do it and I imagine it's the same for the M10.

The sensor does not “receive amplification” The signal from the sensor is a constant and determined by the number of photons striking the sensor. Everything else is processing, either in the camera or in the computer. Your question is probably meant to determine up to what ISO the camera is ISO invariant, i.e. the signal is basically just amplified as opposed to digitally manipulated. There can be some advantages in utilizing ISO invariance, but in the end, the question has little practical significance. 

[adan]

Short answer: With the M10, any ISO 200 or above is an analog amplification of the sensor signal.

The M10 doesn't have a pushed/not pushed indication. Unless one wants to take the ISO dial as being a subtle hint (it stops at 6400 - ISOs 8000 and higher can only be selected from the camera menu). But that does not necessarily mean a changeover point in how the image is processed in-camera. It could simply be where Leica ran out of space on the dial.

And there is no step, plateau or change in slope in the M10 output curves all the way up to ISO 25600 - I do not think they change to "digital pushing" anywhere in that range, at least.

https://www.dxomark.com/leica-m10-classic-reinvented/

The "base" ISO is somewhere (Leica is cagey on the subject) around 130-150 - and that cannot even be selected (nor can 125 or 160), since both the dial and menu skip from 100 (a slight "pull") to 200 (a slight "push"), and Auto-ISO will only use 200 and higher.

That was all hashed out 3 years ago, including a Stefan Daniels interview where he gave the "135-ish" base-ISO estimate.