Can someone help me visually identify Pixel vignetting (such as the one described here: https://photographylife.com/what-is-vignetting#pixel-vignetting)

"Pixel Vignetting: Digital cameras also suffer from pixel vignetting. Compared to optical vignetting, this type of vignetting is only applicable to image sensors. Since digital sensors are flat, their pixels are all built the same way and face the same direction. Pixels in the center of the sensor receive light rays head on at 90 degrees, while pixels in the corner receive them at a slight angle. Because of this, the sensors in the corners will receive slightly less light compared to the center, causing pixel vignetting. Unfortunately, pixel vignetting cannot be cured by stopping down the lens, since it is purely the result of the angle at which light reaches individual pixels on the digital sensor." How can I differentiate it from regular noise? Any visual examples would be immensely appreciated.

Thank you very much, have a great day! G

Can someone help me visually identify Pixel vignetting (such as the one described here: https://photographylife.com/what-is-vignetting#pixel-vignetting)

Pixel Vignetting:

Digital cameras also suffer from pixel vignetting. Compared to optical vignetting, this type of vignetting is only applicable to image sensors. Since digital sensors are flat, their pixels are all built the same way and face the same direction. Pixels in the center of the sensor receive light rays head on at 90 degrees, while pixels in the corner receive them at a slight angle. Because of this, the sensors in the corners will receive slightly less light compared to the center, causing pixel vignetting. Unfortunately, pixel vignetting cannot be cured by stopping down the lens, since it is purely the result of the angle at which light reaches individual pixels on the digital sensor.

How can I differentiate it from regular noise? Any visual examples would be immensely appreciated.