Both options examine what’s in your image and then intelligently add pixels to unimportant areas as you change the size using a bounding box that looks just like a Crop box. Instead of adding pixels throughout the image, you can add pixels to unimportant backgrounds-say, a big sky or swath of grass-by using the Content-Aware Scale option (Photoshop CS4 or later) or the Recompose Tool (Photoshop Elements 8 or later). The pros swear this method gives them terrific results (as mentioned earlier, the pixel-adding prowess of Photoshop CS5 is much better than in previous versions). Enter your desired resolution, choose Bicubic Sharper from the pop-up menu at the bottom of the dialog box and then click OK. In the Document Size section, enter either the width or the height of the desired print. Method 2 Some Photoshop pros swear by this method for large-format printing: In Photoshop or Elements, open the Image Size dialog box and make sure the Resample Image and Constrain Proportions checkboxes are turned on.
Repeat the process until the image has enough pixels to get the resolution you need. Enter a number between 105 and 110 into the Width field and then click OK (the Height field changes to the same number automatically). Then, in the dialog box’s Document Size section, change either the Width or Height pop-up menu to Percent (the other field changes automatically). In Photoshop or Elements, choose Bicubic Smoother from the method pop-up menu (choose Smooth from GraphicConverter’s Algorithm pop-up menu). Open the Image Size dialog box and make sure both the Resample Image and Constrain Proportions checkboxes are turned on (in GraphicConverter, turn on Scale Picture and Proportional). Method 1 Adding pixels 5 to 10 percent at a time won’t completely destroy your image (it causes some quality loss, but not as much as increasing the size by 900 percent all at once, though that ability got a lot better Photoshop CS5). If you’re faced with this situation, choose one of the following methods: When you do, increasing resolution adds pixels to your image that weren’t originally there. If you must have a larger print, leave the Image Size dialog box’s Resample Image checkbox turned on (or the Scale Picture checkbox in GraphicConverter). Photo credits: iStockphoto/AlexandrTimofeev Adding pixels randomly In GraphicConverter’s Scale dialog box you can change this small image’s resolution to 240 ppi, yielding a high quality print that’s 3.5 by 2.3 inches. If you need a bigger print, decrease the resolution incrementally until you reach 140 ppi or so (see our article on Enter a number in the resolution field and each program shows you what the resulting print size will be in the width and height fields. Turn off the Resample Image checkbox (or the Scale Picture checkbox in GraphicConverter) to lock pixel dimensions and protect image quality. Open the Image Size dialog box in Photoshop (choose Image -> Image Size) or Photoshop Elements (Image -> Resize -> Image Size), or the Scale dialog box in GraphicConverter (Picture -> Size -> Scale).
Unless you’re printing from a program that automatically alters resolution when you enter a desired print size (iPhoto) or you trust the print dialog box’s Scale to Fit option (Preview), you’ll need to tweak its settings. For example, if you start with an image that’s about two-by-two inches onscreen, it can print decently at one-by-one inch. A good rule of thumb is that the image can be printed well at half the size it looks.
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Chances are good that the small image you want to print came to you via the Web or email, so you’re viewing it onscreen at its full size.
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