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You are here: Home / Leica Q2 Monochrom / Leica Q2 Monochrom dark-field ISO histograms

Leica Q2 Monochrom dark-field ISO histograms

May 17, 2022 JimK Leave a Comment

This is the sixth post in a series about the Leica Q2 Monochrom. You can see all the other posts in the series by looking in the Category List drop-down menu on the right side of the page.

In this post, I reported ono some anomalies in the Leica Q2 Monochrom dark-field histograms. I had some concerns about what, if anything, that I observed in those histograms were artifacts of RawDigger, the program I used to create them. So I redid the histograms using some Matlab code that I wrote.

ISO 100

 

ISO 200
ISO 400

 

ISO 800

 

ISO 1600

 

ISO 3200

 

ISO 6400

Scale change coming up.

 

ISO 12500

 

ISO 50000

 

ISO 10000

 

It seems that the truncation of the upper tail in RawDigger was an artifact, but everything else was right.

Here’s my net. Except for the center unpopulated buckets, the histograms lok normal up through ISO 3200. From then on, we see evidence of digital manipulation of the raw data.

Leica Q2 Monochrom

← Gamut of 2 more basis-function derived metamer sets Leica Q2 Monochrom dark-field ISO spectra →

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