Originally posted by jimr-pdx Pentax owners since 2008 know that feeling, both the rattle and the discouragement - but then we learn and feel just fine!
Actually, I've owned a K-5IIs and a K-3 for several years. With my older models, there is a slight perception of something sliding inside them when they are moved aggressively. My new K-1, on the other hand, makes a very noticeable clunk when it is merely turned over to access the battery compartment - there is a very significant difference in both the movement necessary to cause the sound and in the volume of the sound.
I plan on shooting the hell out of it while still under Adorama's return period, but I had planned on doing that anyway!
Thanks again for everyone's input.