You can fully correct the image sharpness using SnapTouch. You can make the image sharper or softer. As a rule this effect can be applied to a separate image, to a group of images or to a whole folder (collection).
Activate the "Sharpen" mode through the program menu or through the toolbar. Then specify the images set you want to apply the effect to and specify the action: sharpen the image ("Sharpen") or soften the image ("Soften"). The effect has only one setting the correction rate. Change it using a slider and then apply the effect clicking the "Apply to" button.
NB: You can see the changes while setting the correction rate in the additional "Preview" window.