Now this is too cool not to share and comes to us via Petapixel. Using a USB MIDI controller, you can control sliders in Adobe Lightroom (e.g. exposure, highlight recovery, contrast, etc.) with the Knobroom plug-in. If you use a motorized controller such as the Behringer BCF2000 shown, it gets really interesting. Unfortunately it only works with Lightroom and high-end (Mac) systems.