In digital photography the colors and brightness of each pixel are recorded as binary numbers. Naturally, the more numbers available to you the greater variation you can determine for each pixel. The more variation that you can determine, the richer and more detailed your digital image will be. Your photo editing application most likely describes pixels in 8-bits (256) or 16-bits (65,535).
HDR Express 2 expands your abilities as a photographer with tools that capture and faithfully reproduce the higher contrast scenes that vexed you previously. When creating HDR photography with HDR Express 2 you can leave the strobe lights and neutral density filters in the trunk of your car.