I finally decided to go with settings of 8/7. There was too much loss of detail in the hair.Īn option would have been to back off a bit and use settings around blur radius 7 and maximum delta 6, but then again the only offending area was the hair. Then I checked what those settings looked like on another crop (which is always a good idea to do), I decided that it was on the very edge, and maybe even too much. Īfter playing with the settings a bit I liked the clean look of a blur radius of 10 and maximum delta of 10. In short, maximum delta should be just high enough for the filter to kick in on the noise and blur radius should be just high enough to remove it (actually blend it with neighboring areas).įor a more in depth explanation of what the settings do see. Normally I find that both settings should be between 5 and 10, where low numbers has less effect and higher numbers more, but this is very depending on the camera. The next thing is to experiment with different combinations of the settings (“blur radius” and “maximum delta”) in the selective Gaussian blur filter. Select the crop tool from the tool box, draw a selection and click “crop”.įor best results, this should a part where there’s some noise you want to remove and some detail you want to preserve. Since the selective Gaussian blur filter doesn’t have a preview and is quite heavy to compute (proportional with blur radius), it’s easier to only work on a cropped version of you picture. You could think of it like the opposite of unsharpen mask (that sharpens everything with contrast above a certain threshold. The basic idea behind selective Gaussian blur is that areas in the photo with contrast below a certain threshold gets blurred. Here I’ll show you a way to get rid of that noise using the selective Gaussian blur filter. Some are worse than others, but it’s there. Once you have a smart object layer that has some noise applied, you can double-click on the Add Noise part of the layer to access the Add Noise dialog and change the amount.Text and images Copyright (C) 2002 Atte André Jensen and may not be used without permission of the author.ĭigital cameras often have quite some noise in their pictures. To transform the layer to a smart object, just right-click on the layer and then select Convert to Smart Object. Transform the gray layer to a smart object before applying the noise and you’ll be able to change the amount after the fact instead of having to recreate the noise if you later decide you want to increate or decrease the amount. Otherwise, the correct amount of grain won’t always look the greatest when you then reduce the size of the image by a lot after the fact. Adding some film grainĪnd that’s all there is to it, simple enough! □ Extra Tip #1: Add Film Grain LastĮxtra Tip: for best results, a little bit like with sharpening, add the grain as the last step in your retouching to your already resized images. Now just play around with the amount slider until you get something that looks good to your eyes. Monochromatic will ensure that the grain doesn’t have any color to it, and the Gaussian distribution will randomize the way the grain is laid out, instead of being in a predictable pattern. Go to Filter > Noise > Add Noise, make sure the distribution is set to Gaussian and check the Monochromatic option. Now you have a gray layer on top of your image, but you can’t see it, thanks to the Overlay blend mode. Adding a basic noise/film grain effect is really simple and only 2 steps are needed: 1- New LayerĬreate a new layer ( Shift+Cmd+N Shift+Ctrl+N) and choose a blend mode of Overlay and select the Fill with Overlay neutral color option.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |