Mandatory Noise Reduction (NR) in Various Pentax Cameras

Started May 7, 2018 | Discussions thread
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bclaff Veteran Member • Posts: 8,473
Mandatory Noise Reduction (NR) in Various Pentax Cameras
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At PhotonsToPhotos I detect signal processing, usually Noise Reduction (NR), using 2D Fourier Transforms (2D FTs).
This mosaic illustrates the whole stop results for the K-1 II:

The first three stops are mostly random and indicate little or no signal processing; all other higher ISO settings show significant NR.

In viewing the Read Noise the NR causes a drop that looks like Dual Conversion Gain but is not:

Note that the down-triangle symbol indicates NR

You can use the interactive chart to see where other Pentax cameras start NR.

In general Pentax often starts NR at a much lower ISO setting than others.
Here's a comparison with a camera that does have Dual Conversion Gain and then later, at a much higher ISO setting, starts NR.

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

Pentax K-1 II
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