![]() The Brush Tool can be used by Sampling from a nearly area and lightly painting over areas to be smoothed with an Opacity of 100% and a Flow of 1-5% for a Mouse or 10-20% for a Pen.You can have the High Frequency detail layer turned on or off, whatever you find gives you the best visualisation of the final effect.Have the selection mode set to Current and Below. Edit on a Blank Layer above the Low Frequency Layer, so the editing is non destructive.The Low Frequency (Colour) layer is where you do your large scale retouching to smooth out uneven tones and colours.Adjust the radius setting of the Gaussian Blur until the skin texture can no longer bee seen and then just a little more but not too much. ![]() Choose the correct action for the bit depth of 8 or 16 bit.Once the new layers are produced you can not edit the layers below as these layers are not transparent.Frequency Separation can be done manually but is best used as a Photoshop Action which produces the required layers automatically with the High Frequency Layer on top, then a blank Adjustment Layer, and a Low Frequency Layer below that.The technique of Frequency Separation is different for 8 bit and 16 bit images.It is good for correcting shiny skin as dodge and burn makes the highlights grey.For example the skin colour can be smoothed out without affecting the skin texture. This gives a Low Frequency Layer and a High Frequency Layer. When this is done properly the two frequency separations look identical with the original image when viewed together, however, they have the great advantage of being able to be edited separately, which makes many editing tasks much simpler. Frequency separation is a technique for separating the part of the image with a lot of detail such as skin texture (High frequency) from that without much detail but with such things as skin colour and tone information (Low frequency).Skin Smoothing, Skin Editing and Retouching.
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