I have tried Indigo for 2 days, I made a scene in Blender and got the rendered image after 26 seconds using Blender Internal (second attached image), then I tried to render it in Indigo, hoped to see how realistic it could be, I left the default settings in Blendigo, and after 10 hours and a half, Indigo gave me what you see in the first image

There must be something wrong here, that result didn't worth 10 hours, can anyone help ?