ABSTRACT
If you are a newcomer to this dialog box you may simply want to click on the Auto button and then click OK. This simple procedure ensures the tonality of the digital image starts with a deep black and finishes with a bright white for optimum contrast and visual impact. If you want to perform the task manually click on the black slider underneath the mountain range (the triangle on the left) and drag it to where the mountains start. If you are now looking for the little triangle at the foot of the photographic mountains instead of the virtual ones, then I suggest you go and lie down for a moment and come back refreshed. Do the same with the white slider on the right and you are almost finished. Click and drag the gray slider in the middle to make the image brighter or darker (depending on which way you drag the slider). If you want to start impressing the neighbors then you may like to start calling the gray triangle the ‘Gamma slider’.
