Originally posted by Utkarsh Does anyone know the durability and impact resistance for K3?
There are no real standards for that sort of thing for cameras that I am aware of that might apply to DSLR's.
Most Pentax DSLR bodies 's are pretty tough, with solid metal frames, steel skin etc, but they are precision instruments that are full of sensitive mechanical, optical and electronic components, so in general they should be classed as fragile. But if everything seems to work, things are probably all OK inside the body, particularly if the camera was protected by a camera bag (that's what they are designed to do) and the degree of shock was minor (like a 6ft drop onto carpet within a camera bag, as opposed to a 200ft drop onto concrete).
The component most sensitive to shock may be the lens. A fraction of a mm of misalignment in a lens element and you may have optical issues. But once again, if nothing seems amiss, everything is probably OK.
Modern cameras can take a lot of abuse and still work fine, as this YouTube video shows us:
Canon 7D - Hardcore Durability Test