I just posted the part III of the Build Your Own Metal Halide (Low Cost HMI) Fresnel in the articles section of the blog. In this part, I talk about what we’ve been up to behind the scenes to leverage all this information to create what we call the Hard Light Series which will be the perfect complement to our already existing and soon to expand Soft Light Series. Part IV will be posted shortly where I talk about the standard Osram bulb choices in the Hard Light series and the equivalent replacements that can be had for lower cost.