The latest edition of 3D World (164) includes an excellent review of HDR Light Studio 4 – scoring 4/5.
Here’s a small snippet:
“With its comprehensive toolset and new LightPaint feature, HDR Light Studio 4 makes the task of HDR lighting sublimely easy. Certainly for jobs where the client wants a very specific look, they can now point precisely to where they want a highlight to fall and the result is a mere mouse click away. It’s hard to see the counter argument for studios creating product shots against dropping a few hundred pounds on an application that will both save time and improve the quality of their final renders….. A near-perfect solution for bespoke HDRI lighting.“