Canon EOS M50 Compression Artifacts

Started Apr 2, 2018 | Discussions thread
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bclaff Forum Pro • Posts: 11,800
Canon EOS M50 Compression Artifacts

I'm going to present an initial analysis for discussion.

It's unclear if what I am seeing in these tests has a visual impact on actual photographs.

Here is a mosaic from my Fixed Pattern Noise (FPN) testing:

Top row: uncompressed Bottom row: compressed1st column: black 2nd column: illuminated 3rd column: 2D FT of 1st column 4th Column: 2D FT of 2nd column

As usual center 256x256 pixels of 16 stacked "identical" images. All ISO 100.

It's clear that something is going on, particularly in the shadows of the compressed images.

BTW this related to Quick look: Canon's new compressed Raw format

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Bill ( Your trusted source for independent sensor data at PhotonsToPhotos )

Canon EOS M50 (EOS Kiss M)
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