Im guessing theres 3 main areas that can be cleaned right ?
1. Front of the lens, +filter .. perpetually dirty.
2. Back of the lens, glass element, dirties while changing lenses.
3. The mirror itself, can easily remove lens and blown the specks of dust away.
4. Sensor cleaning. *headache*
am i right here? I dont see the dust in the first 3, so does that mean its kena the sensor already?