Beta 2 version of the Iridient X-Transformer is available. And it turned out that my problems with color artifacts at the overexposed regions were not only mine. The problem appeared when compression option was off during the DNG writing. Now the problem has been solved. Also the UI scaling problem is solved now. In addition there are some new options, telling the Lightroom, while opening the DNG file, to switch off additional sharpening and optical correction. Now pictures opened in Lightroom look much better. Good job, Iridient!