It's great to have the color correction ability. However, the controls are not easy to use. First there is no range for the numbers one can enter. Some seem to go to 255 and others to 100. Moreover, there is no guide to what these numbers do - 0 = no saturation, 100 (or 255) means full saturation? And then you have to play with the numbers to see what effect you will get. This is particularly so for Hue, where different numbers change the hue in different ways. It would be much nice to have sliding markers on bars so one can see instantly what the effect is. These could be accompanied by number boxes so that tweaking (rather than having to micro-manage the mouse (MMM) ) is easy. Thanks.