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One of our favorite little features from Adobe ImageReady has made its way into Photoshop—it’s called Slices From Guides. What it does is slice your image (for the Web) where your guides are positioned. To make use of this handy little number, just make your rulers visible by pressing Command-R (PC: Control-R), drag out guides where you’d like your slices applied, and then press the letter K to use the Slice tool. With the Slice tool selected, look up in the Options Bar and you’ll find a button called Slices From Guides. Click the button and Photoshop will do the rest.
This is a tip we use almost daily when we have to greatly reduce the size and/or resolution of an image. Sometimes when you make a drastic size/resolution change, it can really make the resulting image blurry, so what we do is simply zoom out on the image so that the window and image are at either 50% or 25% view. Then, we take a screen capture of our image window at the new smaller size. That way, the image still looks sharp, but it’s much smaller when we open the screen capture in Photoshop. The trick to making this work is using either a 50%, 25%, or 12.5% view size for making the capture. If you view the image at 66.7%, 33.3%, or 16.7%, the image won’t be as crisp (because of the way Photoshop draws the image at those views).
Oftentimes you have a target size you’re trying to hit when creating Web graphics; for example, you’re creating a Web banner and your file size limit is 32 K. If that’s the case, and you know the target size, why not let Photoshop do all the work? Here’s how: Under the File menu, go to Save for Web. In the Save for Web dialog, just to the right of the Settings pop-up menu, is a right-facing triangle. Click-and-hold it and when the pop-up menu appears, choose Optimize to File Size. In the dialog, enter the target file size you need your graphic to be and click OK to have Photoshop optimize the graphic to fit your target file size. If it doesn’t matter to you whether it’s a GIF or JPEG, choose Auto Select GIF/JPEG and Photoshop will “make the call.”
When you’re designing graphics for the Web, you don’t want even one extra pixel of unused space, because it adds to the overall file size of the image. Because of that, you want to crop your Web graphics as tightly as possible. Luckily for us (you, them, etc.), Photoshop CS can do it for you automatically. Just choose Trim from the Image menu, click OK in the dialog, and it will crop your Web graphic as tightly as possible for the smallest possible file size. It does this by looking at the pixel color in the upper left-hand corner of your image and cropping down until it hits another color. (Note: The Trim dialog also gives you the option to base the crop on the bottom right-hand corner pixel color or transparent areas). This works especially well when creating type for the Web, because you’ll often create it on a white background.
Want a killer tip for squeezing even more size out of your GIF Web images? Make something transparent. That’s right, if you can pick an area of your image to make transparent, your file size will drop like a rock. For example, if you’re putting a logo over a white background and you can make the white area around the logo transparent, your file size will be significantly smaller, because the transparent areas are virtually ignored when determining file size, because, after all, there’s nothing there.
We get more letters from people who ask us, “How do I get rid of that number in the top left-hand corner of my image?” This little puppy appears if you accidentally click on the Slice tool in the Toolbox. Even if you notice your error and immediately switch to another tool, it’s too late. The “slice number” is already in place. To make it go away, go under the View menu, under Show, and choose Slices. Then try not to accidentally click on the Slice tool again. (Sorry, I just felt like scolding somebody. You know, just for fun.)
In CS2 Adobe added two Flash-based templates you can use for your online Web Photo Gallery. Even cooler is the fact that you can now add a background music track to one of these Flash galleries. Just follow these steps: First find the MP3 audio track you want to use as your background music and rename the file as “useraudio.mp3”. Then open your Photoshop CS2 application folder and navigate to Presets>Web Photo Gallery. Inside that folder look for either Flash Gallery 1 or Flash Gallery 2. Depending on which gallery you chose within Photoshop, drag-and-drop your audio file into the corresponding folder. That’s it! You’ve got background music.
Do your Photoshop PSD file sizes seem a little large? It may be because of a Preferences setting that makes Photoshop save a flattened version of your Photoshop image, along with your layered Photoshop file. Why does Photoshop do this? Because there’s a slight possibility you might share this file with someone using Photoshop 2.5 (just like there’s a slight possibility that Congress will vote to cut their own salaries), and Photoshop 2.5 didn’t support layers, so it can’t read your layered document. But because, by default, that flattened version is included in your layered file, guess what—2.5 can open the flattened image. What luck! Who cares? Continue Reading »
Problem: You’re trying to fix barrel distortion that appears on a photo you’re editing, but using the Crop tool’s Perspective feature is a guessing game. You try the crop and it doesn’t look right; you have to undo it, and guess again. Solution: Don’t use the Crop tool’s Perspective feature (found in the Options Bar), even though it was specifically designed to address barrel distortion. Use the standard Free Transform command instead by pressing Command-T (PC: Control-T) and then pressing-and-holding the Command (PC: Control) key while you drag the corner handles to create your perspective. Doing this gives you a live onscreen preview as you work, so fixing the distortion takes just a few seconds—unlike Crop’s Perspective.
Problem: You added more RAM to your system and assigned more RAM to Photoshop, but it doesn’t seem to run any faster. Reason: Adding RAM doesn’t always make Photoshop run faster. It only works if you didn’t have enough RAM to begin with. Adding RAM will only help to make your computer run as fast as it can, but it won’t make your 800-MHz computer run at 801 MHz. For example, if you work on Web images and the average image you work on is 3 MB, you only need about 15 or 20 MB assigned to Photoshop to have it run at full speed. If you’ve got that, and add another 256 MB of RAM, Photoshop won’t run any faster, because Photoshop only needs that 15 or 20 MB that you already had. Freaky. To check your RAM usage, go under the Photoshop menu, under Preferences, and choose Memory & Image Cache (on a Windows PC, Preferences are under the Edit menu).
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Corey shares another way to get a cool 3D light beam effect.
Corey finishes up the Olympic-inspired design that he began last week in Part 1.
The Olympic-inspired tutorial will be coming in two parts. Stop by next week for the conclusion to this video.
This week’s tutorial deals with creating masks for complicated images by using channels.
You can open RAW images in Camera Raw right from Bridge in Photoshop CS3. This frees up Photoshop to continue working on your files while they’re being processed in Camera Raw. Just select one or more images in Bridge, Control-click (PC: Right-click) on them, and choose Open in Camera Raw. This will open the image(s) in Bridge’s Camera Raw rather than Photoshop. You can also use the keyboard shortcut Command-R (PC: Ctrl-R).