>>3471921Because it's a major problem on the GR. Dust slips through multiple ingress points on the body so it's almost impossible to avoid. Most think it gets in through the lens but that's not true, the body is not built to keep dust out so it just sucks in all over. For instance, if you put it in your pocket and pull it out, there's often dust along the seams in the camera body. That's where it gets in. You often find hair halfway inside too.
So basically the only way to avoid dust is to never put the GR in your pocket or put it in your bag. I keep mine in a leather holder meant for Canon compact cameras, works okay, but I still have dust all over my sensor. It's basically an inevitability, if you have a GR, it WILL get dust inside.
Most here won't see it as it only really becomes visible at f8 and above and /p/ is a bokehwhore board but it's still a major problem for those of us who do long exposures or landscapes, or anything that requires going above f8.