I recently cleaned my Sony Mirrorless camera sensor using both a rocket blower and a wet cleaning solution. I was able to successfully remove all the dust/smudges, but I do still have some dust on the edges of the sensor that don't appear to show up in my photos.
I'm not too worried about them since I don't see them, but that got me thinking, why are the edges of the sensor/glass angled/beveled on Sony Mirrorless cameras? See the attached image as a reference.
What is the purpose of the bevel?
Is there any concern on having dust on the bevel itself? While I don't see the dust in my images, I worry it could shift at some point and make it's way to the middle of the sensor. I also worry about trying to clean that part of the sensor as I may end up picking up oils and what not from the sides of the camera and getting that on the sensor.