Digital photos make correctly sharp
by: Admin
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The dialogue window of the indistinct masking filter has three automatic controllers, with which the Scharfzeichnung can be affected: Values for radius, Amount (strength) and Threshold (threshold value) steer the filter. The radius should be selected dependent on the dissolution. The more highly the dissolution, the more highly also the value for the radius. With pictures for the Web with a dissolution of for example 800 x 600 pixels radii are meaningful between 0,2 and a pixel.
The value for Amount depends on the kind of the picture. If it concerns a photo with many small details, then is meaningful less strength with the filter. A landscape with few details stands against it already somewhat more filter strength. A Amount between 0,2 and 0,8 is a usual strength. This value should again be selected from picture to picture, because there are no overall values when sharpening. Here is trying the keys out to success.
Threshold, too German threshold value, is the automatic controller with that the effect filters in picture parts something to be weakened can. Usually the value 0 remains existing. In some cases values prevent between 1 and 3 that for example picture noise in the photo strengthened or fine colour tone becomes pixelig.
With the filter indistinct masking can be strengthened existing image definition. If a photo is strongly blurred or washed, then also the filter is not able to achieve miracles. The photo will remain useless, also with most intensive treatment. A photo must be correctly focused ansatzweise and exhibit thus a basic sharpness, in order to be able to be worked on promisingly with indistinct masking.
Make correctly sharp
A set of example pictures will accompany this article. In order to see the effect of the Scharfzeichnung better, you can drive with your mouse over the test patterns, and the photo appears after treatment. Take the pointer of mouse of the picture down, in order to see again the original. Fast changing between the pictures shows the working on effect best. Particularly in bright and high-contrast places in the picture the won sharpness can be well recognized.
The picture right became with the values radius: 0,4, Amount: 0,8 and Threshold: 0 sharpened. The increase in sharpness in the picture is quite clear. Straight one within the range of the blue Logos and the black writing is the contrast and thus the sharpness impression increased. Also the golden and silver contacts of the main memory are clearly emphasized.
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David
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