Z 7 Fixed Pattern Noise (FPN) results at PhotonsToPhotos

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bclaff Veteran Member • Posts: 7,295
Z 7 Fixed Pattern Noise (FPN) results at PhotonsToPhotos
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Fixed Pattern Noise (FPN) testing at PhotonsToPhotos shows a visible horizontal pattern:

Best viewed "Original Size"

The false colors aren't important; they are simply to help visualize patterns.
The ideal result is a random pattern.

Single is a single image while stacked are 16 "identical" stacked images.
Patterns that show in stacked images are "fixed".

These are 256x256 crops from the center of the sensor.

Without agonizing over the technical details it does look as if horizontal bands might be visible under certain conditions.

Given the much cleaner D850 results:

Best viewed "Original Size"

It would appear that this may have to do with the On Sensor Phase Detect Auto-Focus (OSPDAF). This effect has been seen on other OSPDAF sensors.

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

Nikon Z7
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