Adobe Photoshop is a powerful image editing program. This ITS Training article explains how to perform some simple image manipulations using Photoshop.
Upon completion of this 1-on-1 training, you will be able to:
You probably have a few different programs on your computer that are designed for editing images. Every Windows computer comes with Paint, which is a great for doing really simple things like drawing simple shapes. If you are taking a screenshot of something on your computer screen, PrintKey has a few simple tools to add borders to an image and other little simple things. Some Luther computers also have Fireworks installed, which is actually very similar to Photoshop in function (in fact, the company that makes Fireworks is now owned by Adobe, who makes Photoshop). The program you use to edit images is completely up to you. This article, however, focuses on what you can do with Adobe Photoshop.
When you save a new document in Photoshop, it will want to be saved as a PSD (Photoshop file). Doing this will allow you to keep layers (if any) and other extra data, which is useful if you plan on doing more work on the image later. However, if you want to share the image with a friend, or on the internet, you’ll want to save the image as a GIF, JPEG, or PNG file. GIF files are well-suited for drawings and simple animations. JPEG and PNG files are good formats for saving photos. JPEG allows you to “compress” the image, which causes it to take up less disk space, at the cost of a little bit of image quality (Note: this is not the same kind of compression used in ZIP files). PNG files are lossless which means that no compression is used.
TIP: A quicker way to do this is to browse to the image on your machine, right-click (or control-click on a Macintosh) on the icon, and go to Open With > Adobe Photoshop.
You may want to adjust an image to be smaller so that it fits better on a web page, or so that you can put multiple images in one document.
If you want to cut the edges off of an image, you want to use the cropping tool.
1. Open the image that you would like to crop in Photoshop (see above for more info on how to open Photoshop if you aren’t sure).
2. In the toolbar, click on the Crop Tool.
3. Use the tool to create a rectangle around the area that you would like to crop.
4. Adjust the size of the rectangle using the handles until you are satisfied with your selection.
5. Double-click on the selection to crop the image.
1. Open the photo you want to edit in Photoshop. You may want to zoom in so that you can click on the eyeball easier.
2. Choose the Color Replacement tool in the toolbar. It may be hidden by the Spot Healing tool or the Patch tool; if so, right click, then select the Color Replacement tool.
3. Click on the subject’s eyes.
Sometimes when you take a digital photo, it might look too dark, or the colors might not be right. Photoshop has a few automatic enhancement tools that might help. These tools are Auto Levels, Auto Contrast, and Auto Color.
To apply one of these enhancements, go to Image > Adjustments > Auto Levels (or Auto Contrast or Auto Color). If you don’t like the enhancements, you can always go to Edit > Undo to undo the changes.
Help is available within Photoshop. Press the F1 key, or go to Help > Photoshop Help….
Online help from Adobe can be found here.