EX1 shock resitent ?
I dropped mine yesterday, inside a bag and enclosed in a small pocket, but it was from about 50-70 cm on a metal plate (for trees) so i heard the notch noise, like bim, bang, well a clear shock. By-the-way the gravity s* on earth, it's clearly too strong.
Anyway i'm a bit worry. Every thing seems ok... i hate that, maybe some lens position was screwed for 1,5 micron...