A histogram with numerous gaps represents an image with a low tonal range. Such aberrations are very easy to recognize with SilverFast. Just undock the window of the histogram tool from the tools dock and drag it wide using your mouse.
When editing images with SilverFast, make sure that the histogram of your image remains intact. You can follow your changes to the image at any time in the output histogram.
Tip: With SilverFast Ai Studio and HDR Studio you can switch to 16 bit histogram in the expert settings of the Densitometer dialog window.
Tip: In the histogram dialog, you can always display the output histogram by pressing the «ALT» key.