Next is the Reduce Color Noise slider (yellow), which, as you may have guessed, reduces color noise. I've colorized the sections we're most interested in.įrom top to bottom, the first two sliders, Strength and Preserve Details (colored in green), are used to remove luminance noise, which we'll look at shortly. Even though it's not so obvious, the column along the right is actually divided up into different sections, with each section affecting a different type of noise. The Reduce Noise dialog box contains a large preview area on the left so we can see what we're doing (although we can also see what we're doing in the document window itself as long as the Preview option is checked, which it is by default) and some sliders and options along the right. I haven't done anything with the image yet other than cropped it a little: Here's an image I have open on my screen, taken a couple of years ago while walking through Animal Kingdom in Disney World. Let's see how it works.ĭownload this tutorial as a print-ready PDF! Fortunately, while we can't remove it completely, Photoshop's Reduce Noise filter still does a good job of reducing noise without sacrificing important image detail.
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As powerful as Photoshop is, there's still no way to take a noisy image and clean it up completely, at least not without removing most of the detail in the image along with it.Īny time we shoot in low light, use high ISO settings, or leave the expensive dSLR at home because the compact camera is easier to carry, there's a good chance we'll be dealing with noise. Notice that the name of the filter is Reduce Noise, not Remove Noise.
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In this Photo Retouch tutorial, we'll look at how to reduce the appearance of noise in an image, including luminance noise, color noise and even jpeg artifacts, all using the Reduce Noise filter, first introduced in Photoshop CS2 (which means you'll need at least CS2 to follow along).
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