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Adobe Photoshop CS3 for Photographers Tutorials

Camera Settings / Sensor Noise pt. 2

Subtitles of the Movie

Alright, let's take a look and see how we get rid of noise in an image and we have this basketball picture here that obviously needs to be cropped. The only problem is that this is a 3200 ISO image and as we have learned, there's going to be a great deal of image noise in there. So if we crop it, all we're going to do is accentuate that image noise. But let's go ahead and start and I'll take you through the process to how to get rid of the noise. The first thing we do, let's start with the basics on this and straighten this image. Let's level it out. One of my pet peeves is crooked images. I think it's just a lot more professional if your images are level. And I'll show you this process later, but for the moment this is how I begin every, every cropping situation that I get into, especially on basketball shots. We're going to crop it good and tight, number one because that's what the image needs and number two, it's going to be a good example of what happens when you crop an image at a high ISO image. Look in here and you can see that there is quite a bit of noise. And if we go to a hundred percent magnification, we can see that the noise on this image is very, very obvious. And if you had any inkling at all of printing this, you would have probably an unacceptable result. So let's take a look and see how we go about getting rid of the noise. We go to the layers palette first and we establish two copy layers and we take the top layer as the active layer and we hit filter and we go down to Neat Image because it's installed as a plug-in, reduce noise and the Neat Image program comes up. Now, Neat Image is a very automatic, intuitive program. Everything it does is automatic. It takes a reading of the image when you hit auto profile. See that? And it takes a sample of the image from right there and it automatically decides what it needs to do to get rid of the noise in the image. So we go here and if you want to make manual adjustments on this image, you can with all of these settings, but it takes time, it takes a lot of back and forth experimentation and, you know, I just don't really have time to stop every time I want to crop something with a high ISO image, so I've developed a process that really kind of sidesteps all these adjustments and so on and what we do is we just go ahead and hit apply, which is going to go ahead and apply all of the changes that the program decides that it needs to effect. And indeed you can see very quickly that the program did get rid of all the noise. But I think in my opinion, it kind of too good a job. The skin on the player here is too smooth. I mean, it's silky smooth. It doesn't look real. And there's no texture in the hair. It's just done too good a job and if you take a look at the, at the basketball itself, you know, there's no texture in the basketball. So I think it's really been a little bit of overkill. Now, one of the ways that you can deal with that is just change the opacity on the top layer. Seventy percent, see how that looks. And that's bringing back some of the detail in the tattoo, bringing back texture in the hair. If we go a little bit further and we take the opacity down to a 65 percent, I think that's about the right setting. And if we take a look at the before and after, we can see that indeed, here's the before and here's the after and we've struck a middle ground between accepting a little bit of noise and getting rid of, you know, 80, 90 percent of the worst of it and still maintaining a little bit of detail in the image. And here's what our full-frame image looks like. Much, much better, huh? And that's how you do it. Neat Image is a very good program and if you start using it, I think you'll have very, very good success with it.

Tutorial Information

Course: Adobe Photoshop CS3 for Photographers
Author: Phil Hawkins
SKU: 33889
ISBN: 1-934743-75-5
Release Date: 2008-07-23
Duration: 7.5 hrs / 127 lessons
Captions: Available on CD and Online University
Compatibility: Vista/XP/2000, OS X, Linux
QuickTime 7, Flash 8

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