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View Full Version : Upgrading M9 to M10. ISO and picture question


Alex Krasotkin
09-19-2018, 05:44
Guys, what will be a working ISO in M10 in comparison with M9? For example, ISO800 on M9 is equal to what ISO on M10? In addition, I like a picture from M9, since it looks like slide film. Will it be the same kind on M10?

many thanks,
Alex

willie_901
09-19-2018, 06:40
Well, here's some data computed using statistical analysis of un-rendered raw files.

Input-referred read noise vs ISO. (http://www.photonstophotos.net/Charts/RN_e.htm#Leica%20M9_14,Leica%20M10_14)

Input referred read noise is normalized to estimate the electronic noise (read noise) generated by converting one photon to one photoelectron for a single photosite (pixel).

Clearly the M10 benefits from a significantly lower noise level at any camera ISO setting.

The other take away is the low read noise level with the M10 means that its perceived image noise is dominated by photon noise (a.k.a. shot noise). At lower light levels (higher camera ISOs) the M9's perceived image noise has the same photon noise level, but read noise is present too (data not shown).

The M10's read noise advantage will be most obvious in the perceived image quality of shadow regions.

Here (http://www.photonstophotos.net/Charts/PDR.htm#Leica%20M9,Leica%20M10) is a comparison of the dynamic range.

This shows even at a low ISO setting (very bright light) the M10 will have higher perceived image quality in shadow regions because the S/N is higher.

This plot (http://www.photonstophotos.net/Charts/LowLightISO_Area_scatter.htm#Leica) compares the low-light performance of the two bodies. You have to drag your screen cursor over the symbols to identify the cameras.

This data (http://www.photonstophotos.net/Charts/LowLightISO_Area_scatter.htm#Leica) indicates the M10 delivers about a 2 2/3 stop improvement in low light performance.


I have no idea whether or not the "slide film" aesthetic is identical for the M10. This is a highly subjective issue. However, I would be very surprised if one could not develop a M10 raw rendering workflow that would match or exceed the M9. In-camera JPEGs are a completely topic.

jaapv
09-19-2018, 07:43
Guys, what will be a working ISO in M10 in comparison with M9? For example, ISO800 on M9 is equal to what ISO on M10? In addition, I like a picture from M9, since it looks like slide film. Will it be the same kind on M10?

many thanks,
Alex
I don't own an M10, but most users claim a clean ISO 3200 and good ISO 6400, usable 12.500.


Here are over 1000 M10 images - judge for yourself :)

https://www.l-camera-forum.com/topic/268528-m10-the-image-thread/