Despite having possibly the strangest name in the history of software, Qtpfsgui is actually a very powerful digital photography tool that allows you get the lighting of your images just right. The application is used to adjust the lighting of images taken at different exposures in order to make them consistent with each other, using HDR technology. Given three images - one over-exposed (say, -2), one normally exposed (0) and one under-exposed (+2), the application will automatically fuse the images in order to ensure the correct exposure in each picture. This is a technique that would require you to be an expert in photography in the real world, and all the lighting and exposure adjustments you'd have to make would drive you crazy. Qtpfsgui offers a range of clay/tone mapping filters to help you further enrich the quality of your pictures. These include: Fattal, Ashikmin, Durand, Drago, Pattanaik, Reinhard'02 y Reinhard'04. Overall, Qtpfsgui is a near-faultless app, available for free, for uniting three images and further enhancing them with filters. What's more, this can all be done with the minimum amount of effort on your part.