Actually, according to my CSI skills, i think without the filter, the front element would not have cracked anyway.
It looked like an impact point from the side, all the cracks radiate from there.
The rim is still intact, and can screw in screw out still...
Will store it for keepsake ;p
the lens cap was on.
it was in my lowepro bag sling bag (the black box-shaped one) and the best part is that i don't remember dropping it at all
it was placed face down, with the lens cap still on.
to my shock when i took it out yesterday, i saw the cracked filter, FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU