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With the built-in image adjustments in Keynote, you can make some pretty good adjustments to the quality of your imported graphics and photographs that might preclude you from having to go into Photoshop. Here is the set of photos that we want to make some adjustments to, these have been shot really well. They have been shot professionally. So there is nothing wrong with them per say. Let's say we wanted to explore a different look for this particular presentation and we wanted to add a different sort of move to the photographs. So what I'm first going to do is duplicate this entire slide just for safety, Ctrl+Click on that and slide over here and choose Duplicate. This gives us a backup in case we want to ever go back to where we were, what we can always do with the image adjustments but sometimes it's also nice to do an AB Comparison.
So in this second file, let me click on this main image here, since that's the focal point and up here in the Format bar, you can see this button, as I click on that button it brings up the Adjust Image tool. Drag it out of the way a little bit. Down here at the bottom there is button called Enhance and if I click on that you are not going to see a big difference in the photograph. Again this is a professionally shot photograph. So it's not going to enhance it all that much but with shot that you made yourself it might be a little bit off. Hitting Reset Image will bring the image back to its original state but let's say we want to add a bit more punch or a bit more drama to this photograph.
I'll go up here to Brightness. The Brightness function basically adds white to a photograph or takes it away. Actually I have find that Brightness isn't always the best choice. What's a far more interesting choice usually is the Exposure, which carries the entire range of colors up and down rather than just adding white to it. So I'm going to take up my Exposure a bit. Again we are looking to make it a little bit more dramatic and I'm going to saturate it here a bit and Temperature is really good if I want to cool things off or warm things up. It's already kind of a cool photograph and this is Italy by the way. So let's just give it a little bit more warmth like that.
Notice as I'm making these adjustments with this histogram down here, for instance when I grab Exposure, you can see it gives you a graphic representation of actually how the colors across the full range of dark to bright are being manipulated. It could be very helpful especially when you really know how to read histogram, how to make the adjustments that you might like but usually the best way is just look at the photograph, move these sliders around until it looks about what you are looking for. A lot of it is experimentation; there is nothing wrong with that. Let me shut off this panel and let me just click between Slide 1 and Slide 2. So you can see there is the original and there is the adjustments we have made and that's kind of the look we are going for. So I can do the same thing with the other photographs, click on them, click on the Adjust Image tool and it seems like you know adding a bit of exposure and warming it up a bit, seems do the trick.
So the Image Adjustment tool is not going to replace Photoshop for us. Very serious color correction or doing a lot of deep color editing. And we close out Adjust image. Let me show you one more thing. When I click on the New Slide, go up here to the Inspector, go to the Appearance and turn off that title bar and going to go to my Media browser, I want to show you, of course that works with photographs we just did that, it also works for graphic images. There is no reason why would not, because these are after all do the same as the photograph. I can go here and make some adjustments and there is now of course, when I'm working with the logo like in the case you really don't want to do that because usually those colors have been very much set by designers. But my point on this is I want to show you that if I bring in a PDF, even though this looks identical this is the PDF of that same image and PDFs will not allow for image adjustments, it's a different type of file format where the colors and the settings are pretty much baked in.
So if you drag in the graphic and pull down Adjust Image and you see that's all grayed out like this. It's probably a PDF. That's your source and you will have to go elsewhere to make some adjustments to that. So the built-in Image Adjuster in Keynote can really save you a lot of time from having to go into Photoshop if you just wanted to do some quick markups or make some very basic corrections.
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