Adobe Photoshop allows you to manipulate a digital photograph to precise specifications, right down to individual pixels. For example, you can use the software to add colour to the pupil of an eye, remove tiny skin blemishes or eliminate a thin line of blank space between two slats on a fence. In order to edit photos in such a precise manner, you will need to zoom in and enlarge the photo beyond its default view size.
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Open your Photoshop "Layers" window, if your layers do not currently appear on your screen. Your "Layers" window would look like a small, rectangular box, usually found on the right side of your screen, featuring a series of thumbnail images indicated by names like "Layer 1" and "Layer 2." If you do not see this box, click "Window" on your menu bar and select "Layers" from the drop-down list. Each layer contains a portion of your image, so depending on your project, you might have a background, such as a beach, on one layer, a few words of text on another layer and a pasted image of a person on a third layer.
Isolate your layer from the rest of the image. If you want your entire image to remain visible as you zoom in, you can skip this step. On the other hand, if you want to make all layers invisible except for the layer you intend to edit, hold down the "Alt" key -- or "Option" on a Mac keyboard -- and click the eye symbol directly to the left of the layer you want to save, closing all other layers. Each layer in your "Layers" window will contain a miniature image of the content contained in that layer, so just look at the images to find out which layer you want to save.
Double-click the "Zoom" indicator in the lower-left corner of the window, featuring a number followed by a per cent sign. Depending on the actual size of your image, the number may read "100%," "66.67%," "50%," "25%" or some other variable. When you double-click the number, it will turn blue, allowing you to enter a new value.
Type a new number over the original. If you want to enlarge the image, select a larger number than the one currently on your screen. For example, if the indicator reads "100%" and you want to double the size of your zoom, enter the number 200. Photoshop will let you zoom in as much as 1,600 per cent. Press "Enter" after you insert the new number.
Tips and warnings
- You also can zoom in using Photoshop's "Zoom" tool. Click the magnifying glass image on your toolbar, select the "+" sign from the options panel along the top of your screen and click the area on your screen where you want to zoom in. To zoom in more, click again. To zoom out, click the "-" sign on the options panel and click your image again.
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