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In iPhoto '11 Essential Training, Derrick Story offers an in-depth tour of the popular photo management software from Apple, demonstrating its various features for organizing, editing, and sharing images. The course covers techniques to categorize and combine images into custom collections using iPhoto's geotagging, face detection, and Smart Album features, and offers insight on how to perform key image corrections and enhancements. Also covered are tutorials on building customized slideshows and outputting collections to calendars, books, and greeting cards. Exercise files accompany the course.
I am going to work with the Saturation slider now in the Adjust pane and I am going to pick two shots because the Saturation slider has a few tricks of its sleeve and I need a couple of different images to show you how those tricks work. We'll do one here of Morgan and then I'm going to go down here and I'm going to hold down the Command key right here. Then I'm going to click on Edit. We will get those side-by-side.
So here is our Saturation slider right here. It's pretty straightforward in the sense that you move this slider one direction and it saturates the colors. And you can just go really as garish as you want with that. Then another way to use it is to move it the other way to totally desaturate your image and create a black-and-white photograph. What's interesting that when you create the black-and-white photograph, then the Temperature and Tint sliders allow you to adjust the black and whiteness of that shot, and that's kind of fun.
Some artists, photographers, like the desaturation approach for adjusting black-and-white images better than actually going to Black-and-White mode. So that's one trick. Now, the other trick up its sleeve is that you have this box right here called Avoid Saturating Skin Tones. Now, its original intent was for a shot like this, that we're going to flip over here right now. If you want to increase the saturation of the environmental tones here, but you don't want Morgan's skin tones to get garish, you check this box.
And as you move this slider, you will see that the other colors really change in intensity, but her skin tones stay pretty much the same. Watch what happens if I uncheck this box. Look at that. See, it just really destroys her skin tones. What happens when you check this box here? This is really a Vibrancy control that you have in Aperture and the way that algorithm works is that when this box is checked and you move the slider, the colors that are least saturated get saturated more and the skin tones are protected by design and it works really well.
So we can increase the color of the stuff around her without her skin tones going to heck. Now, this actually also works on landscapes, because you'll notice that the colors can get garish pretty fast on a landscape like this. If you check this box and basically go to Vibrancy mode, watch as I move. The slider is more intelligent. So it works. It's more subtle also. So it's going to work on tones that are not saturated as much and increase the saturation a little bit.
So you can use it on landscapes also, although it's really designed for people. So Saturation can be used a couple of different ways for black-and-white, basically by desaturating a photo and then you use Temperature and Tint to fine-tune that. And then if you check this box, you can saturate colors in your image and protect the skin tones. The effect is a little bit more subtle, but it also protects you from going a little too garish in your Saturation adjustments.
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