I’m farly new to Blender and just trying out a few things. At the moment I’m stuck using fluids and glass. When I use Blender internal render engine I get strange vertical artefacts in the fluid (no, it’s not because the fluid penetrates the glass, since I moved the glass away and still got the same artefacts.)
Trying to solve this problem I tried using Yafray instead of the internal render engine. After having had a rendered image that was almost completely black I found out, that I have to increase the energy of the area lamps I used.
The table the glass stands on is perfectly lit, but the glass itself and the fluid is way to dark. Does anyone have a clue whats going wrong?
Using internal render engine:
Using internal render engine with rayshadow (without fluid this time):