Subtitles of the Movie

In this movie, we're going to use the Zoom and Loop Tools. These are actually two separate tools but both provides ways to look at magnified sections of your image. Why would you want to do that? Well, checking a magnified view of the image often helps you to make accurate decisions about details in your image. One of the most common reasons to zoom in is to judge whether an image is critically sharp. A picture may look fine when it's presented as a thumbnail or a small preview, but it's until you see it at a hundred percent that you know for sure whether it's critically sharp in the important areas of the image. At 100 percent magnification, one pixel in your image is represented by one pixel on your monitor. Another common reason to use the magnified view is to check for and remove dust or other debris that was on your sensor, as well as any other distracting elements in your image such as electric wires. By removing them in a magnified view, you can work more accurately and limit how broad an area you modify. That way you maintain the integrity of your image. A third common reason to check a magnified view is to check for noise. Often noise will be invisible in the thumbnail but painfully evident when viewed at a hundred percent. To use the Zoom Tool, press Z or the Zoom Viewer Icon right here. The Viewer immediately changes to a 100-percent magnified view. A small box with an even smaller red box appears. The little red box indicates the part of the image that you're viewing. Click on it and drag to see the other areas of your image. Alternatively, you can press down the Spacebar and access the Hand Tool and drag. As I drag around this image at a hundred percent, I discover that there's noise that I hadn't seen previously. To return to normal magnification, press Z or the Zoom Viewer Icon a second time. At times you may not want to magnify the entire image, but you might like to take a closer look at specific parts of the image. In that case, the Loop Tool is helpful. Access the Loop Tool by pressing the Tilde Key. That's the one to the left of the Number One Key or go up to View, Show Loop. To resize the Loop itself, click on the Handle and drag it inwards or outwards. You could also use the Shortcut Option plus Shift, plus Plus or Minus. As I look at this image, I can see readily that it's quite sharp. Right now the focus is on the cursor, which means that what you see in the magnified view of the Loop is wherever the cursor is pointing. I can change that by going to Focus on Loop. Now what you see in the Loop is what's directly underneath it. There are times when each of these different behaviors will be useful to you. You can right click or Control click anywhere on the Loop Tool, access the choices and those choices include Changes in Magnification from 50 percent all the way up to 1600 percent. At the larger magnifications, you have the option to also Overlay the Pixel Grid. It's not an option I find particularly useful, but at times you might. Click it again to toggle it off. I'm going to set it back to a hundred percent. Notice also that there are Color Values in the middle of my Loop. You can toggle that on and off and in addition, when it's on, if you would prefer to see a different color space rather than RGB, go over to your Adjustments Menu to the Gear Icon and choose whatever color space you would prefer. In this case perhaps CMYK. By default, you're using the Centered Loop. When Aperture was first released, there was a slightly different Loop that was far more awkward to use. It's still accessible if anyone wants it by Control clicking on the Loop and choosing to toggle off the option to Use a Centered Loop. Truthfully, this is a very awkward Loop so I would highly recommend that you leave it on Using a Centered Loop. When you're done with the Loop Tool, press the Tilde Key again or View Loop. Sometimes you'll want to compare several images to see which one is the sharpest. First you would select the images. In this case I'm going to use two, but you can use as many as you would like. I'm going to zoom in and I'm going to manually set them to somewhat similar areas. Now, as you're seeing right now, I adjusted each one individually. But if I hold down the Shift Key as I click and drag, both images move together. That can be quite convenient when you need to check particular parts of an image to decide which one is sharper. Once again, to leave the Zoom View, click Z or the Zoom Viewer.