shadow error? please help

I am doing a rendering with 3 glass vases with 1 spot light and an area light and I get a strange shadow… here is the picture see if you can make any sense of this. Just a quick thought could it be the reflecting and bending of the light??

I’ve noticed those when I use spot-lights too. I’d be interested in what causes them (and more than that, how to get rid of them).

What rendering engine are you using, the built in or Yafray?

Pretty sure it’s caused by the Clipstart value being set exactly where that line is.


Thanks, im still working on it I’ve tried it will lamps and area as well but i still get the same problem.