first impression counts: if you have bad feelings when you first see it, then it is likely not good.
If you don't trust your instincts, follow simple guidelines for any equioment:
- feel for dent, scratches
- check every moving part is moving as it is supposed to , no noise
- internal is clean (detach the lens for this)
- dgital cam must take few shots at different exposures (make sure if you under, the result also under.
- zoom to max to see for spots in LCD