Dust in Sensor
This left me wondering the (D)SLRs are usually designed to support multiple lens and while one is travelling its hard to find a dust free environment to change the lens. Why wouldn't Camera manufactures keep this mind and have a protective layer of glass between the lens opening and the sensor. Wiping this off would be more easier than touching the sensors which are more delicate in nature.
I am sure a lot of you here would have faced similar challenges and I would like to hear out from you guys how you manage to tackle this issue. I guess your response would help me be careful the new camera and also to many out there who would be benefited.