Stupid mistake on my part. I had the 24-105L on my desk, in a lens pouch. Beside it I had my 85L in a lens pouch. I grabbed the 85L none-to-gently to put it away in my bag. Little did I know, the string of the 85L lens pouch was tangled around the 24-105's.
... I effectively flung the lens off the desk and about 4-5ft down on to the hardwood floor.
After my initial gasp, I grabbed the pouch and tore the lens out of it. Nothing looked scuffed, dented or broken. Zoom ring still worked. It had a filter on it, but nothing was broken there either. Put it on my camera and did a battery focus test to see if the fall bumped anything out of alignment.
To me, everything looks fine... Didnt seem to front or back focus at all, focus speed the usual (using it with a flash however, low-light in the living room). What do you guys think? Could the lens pouch have actually buffered some of the impact? Its just the generic ones that come in the box. It made a pretty loud thunk when it fell.
I guess this speaks for L-Series build quality? Ive just seen so many threads where someone drops a lens and they have to send it in to be fixed...
Is there any other tests I could do in the daytime? Should I test at all focal lengths?