>>3364892>In order to prevent that from happening, you'd need the sensor and shutter to be in a sealed section with a piece of glass acting as a barrier for the sensor to look throughLike in the GR, you mean?
The hot mirror literally seals off the lens from the body. See pic related.
I recently disassembled my GR completely and tons of dust had entered through the gaps I mentioned. The lens compartment itself didn't contain a single spec, it was impeccably clean.
