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In Computer Literacy for the Mac, author Garrick Chow walks through the skills necessary to use Mac computers comfortably, while improving learning, productivity, and performance. This course focuses on the Apple Mac OS X operating system and offers a thorough introduction to computers, networks, and computer peripherals such as printers, digital cameras, and more. In addition, basic procedures with software applications, the Internet, and email are covered. Exercise file accompany the course.
This course also includes chapter-level assessments for use as instructional aides. To download the assessments, click the following link: Computer Literacy Assessments. The file contains an assessment movie, chapter-level assessments, and answer keys.
Many times the photos you shoot might not come out as good-looking as you had hoped for. Maybe the picture is a little too dark or bright, maybe some stranger's walking through the background, or maybe there is a slight color tint to the photo. In this movie, I am going to show you some basic image editing techniques you can apply in iPhoto. Again, you will find many similar tools available in other image editing programs, but I am using iPhoto since it's most likely already on your Mac. Start by selecting the image you want to edit, and then click the Edit button. So the editing tools are located at the bottom of the window, and there are several things you can do there.
First of all, if the image is rotated on its side, just click the Rotate button, until it's right side up. The Crop tool is nice when you want to print your photo on a specific size of paper, and you want to make sure your photo is the proper dimensions. Click Crop, then select to size. For example, you might be printing to 5 x 7 or 4 x 6 piece of photo paper. That gives you a crop area with the proper dimensions, and you can resize that as necessary. I'm just going to do something like this.
When you are done, click Apply, and now my photo has been cropped. Now the Pagoda in this photo looks just a little crooked to me, so I am going to select the Straighten tool, which you can see it gives me this grid, and now I can use the slider and slightly rotate the photo until it looks about right. And I will close the Straighten tool by clicking the X button. Next we have the Enhance button, which is for anyone who doesn't know much about photo correction, but still wants a photo with good color and contrast. So I will go ahead and click that. Now Apple has never been very specific about explaining exactly what the Enhance button does, but when you click it, it appears that iPhoto examines, among other things, the picture's light levels, color balance, and saturation, and adjusts everything to give a better looking version of your picture.
Sometimes it results in no significant change in your picture, but more often than not, the results are better than what you started out with. The Enhance button works really work with photos that are too dark or that might not have enough contrast. Now one of the ways you can see what it's doing is by opening up the Adjust pane. Let me choose Edit > Undo Enhance Photo to take off that enhancement. The Adjust pane is where you will find manual controls for image adjustments. So now when I click Enhance again, watch the Enhance pane. You can see exactly what settings were applied. This is a good way to learn how to use the Adjustment pane by just observing what the automatic adjustment does.
If you do want to experiment in the Adjust pane, you can just drag sliders around to see what they do, and this is another good way to learn. There is nothing really more hands on than this. I kind of like how the Highlight slider is bringing out some of those clouds that are around the pagoda right there, so maybe I will leave that like right about there. Now if you totally mess the picture up, just click the Reset button, to set the Adjust pane back to its defaults. Let me close that. Now in addition you also have the Effects pane, in which you just click various effects to apply them to your image.
You can click each effect multiple times to increase their affect on the picture, or click the Center button Original, to revert back to the original version. And you can combine these effects as well. For instance, maybe I want to boot the color and also add a bit of an edge blur to the photo, like so. I kind of like the original more, so I am going to go back to that. iPhoto also includes a Red Eye tool, which is great for photos of people in which the Flash from the camera has caused their pupils to become red, and there is also a Retouch tool, which is very good for removing blemishes from skin or other imperfections in your photos.
For example, maybe I could use it to get rid of this street lamp sticking up out of the trees right here. I am going to first resize my brush, a little smaller, maybe a little bit bigger than that, and all I have to do here is to just click and drag over the street lamp, do it a couple more times, and the street lamp is gone. So there you have a quick run down of all the powerful editing tools found in iPhoto. I will click Done, and now my photo has been edited.
Again, you will find similar image editing tools in other photo software applications as well.
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