Stress tests - Zeiss

[chambeshi]

http://lenspire.zeiss.com/en/stress-test-for-lenses/

[atpaula]

Being tested by a scientist is easy. 
Imagine a lens being tested by a child. That would be a super lens if it stays intact. lol
Seriously, thank you for posting this interesting link.
I wonder what kind of tests Nikon does on their lenses and cameras.

[elsa hoffmann]

I am with AtPaula - if a lens survives a child - it probably is a rock