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(Un)Sharpen effects

Unsharp mask is a powerful tool to "sharpen" photos.

Contrary to what the name suggests, sharpening does not mean restoring details to an out-of-focus photo.

Sharpening refers to the contrast difference between light and dark within an image.

To access the Unsharp Mask tool, select an image on your canvas.

Click on the Image Filter Effects icon.

Click on More Options... to expose more controls, if required.

Scroll down to Unsharp Mask

Radius
Increase the Radius slider to make bright areas brigher and dark areas darker.  

This effect is most visible on the edges of dark and light areas.


Mix
Mix controls the degree of intensity of the effect.

Note: if the Radius slider seems inactive, be sure that the Mix value is set above 0.
Threshold
Threshold affects the interaction of adjacent pixels with more contrast.

"Defog" effect

The "defog" technique is very effective on black and white images in particular.

This will increase contrast on edges to produce great contrasty images.


Set the Radius 200 and the Mix to 0.5 to achieve this effect.



NOTES
  • If you plan to use Memento's non-destructive sharpening effects, be careful not to pre-sharpen your images in your image editing software. Oversharpening will produce "artefacts" (stray pixel effects) that are undesirable.

  • Be sure to zoom in on your photos when applying Unsharp Mask as applying it on a thumbnail sized image may lead you into overdoing the sharpening

Our recommended settings:
  • Radius between 100 and 300
  • Mix: between 1 and 5
  • Threshold: dependent on the image itself




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