Absolute Beginner's Guide to Digital Photography

■ View, Show, Selection Edges. This command hides the “marching ants” selection marquee; the selec- tion is still there but hidd ...

CHAPTER 11 ADVANCED SELECTION TOOLS 169 FIGURE 11.21 The taillight selected with lasso, no feather, and no antialiasing. Notice ...

Don’t Forget the Crop Tool Selections can be used to crop an image, or you can use the Crop tool found near the top-left on the ...

To move the image while you trace, press and hold down the spacebar on your keyboard. Move the mouse and then release the spaceb ...

172 ABSOLUTE BEGINNER’S GUIDE TODIGITAL PHOTOGRAPHY FIGURE 11.25 Correcting mis- takes in a quick mask. The Absolute Minimum Thi ...

12 In this chapter Understanding Different Terms for Resolution Digital Cameras and Resolution Resolution of Film: How Many Pix ...

Individually, these terms might make sense (on an alert day), but when these terms and their associated technologies are used to ...

■ dpi. Dots per inchis used by inkjet printers, dye-sublimation printers, and laser printers to define their output resolution. ...

Images taken with digital cameras and photographs or negatives scanned into the computer use the term pixels per inch (ppi) to r ...

One term that cannot be used with digital cameras is pixels per inch. The reason is that CCD sensors come in different sizes. A ...

Resolution of Film: How Many Pixels? The first high-end consumer cameras in 1998 were 1-megapixel or less, and could create digi ...

CHAPTER 12 THE IMPORTANCE OF RESOLUTION 179 FIGURE 12.1 Closeup of a scan from a dis- posable camera negative and a 4-megapixel ...

Scanner Software and Resolution If you have a scanner, you probably will be scan- ning negatives or photos. The resolution you w ...

CHAPTER 12 THE IMPORTANCE OF RESOLUTION 181 Table 12.2 Common Scanner Settings Scanner Software Option Common Settings Purpose C ...

Bit Depth 12, 24, 36, 48 Specifies the bit depth you would like to use during the scan. Twenty-four-bit depth is the default, an ...

CHAPTER 12 THE IMPORTANCE OF RESOLUTION 183 Exit the scanning software and save the image with a new name. You can now edit it ...

Most everything you work with relies on 8-bit images. Your monitor, your digital camera, and so on usually rely on 8-bit values ...

CHAPTER 12 THE IMPORTANCE OF RESOLUTION 185 FIGURE 12.4 16-bit scans must be con- verted. A low-bit scan, which has less informa ...

You cannot use adjustment layers on 48-bit images because Adobe wants you to make your tonal corrections with Curves or Levels a ...

CHAPTER 12 THE IMPORTANCE OF RESOLUTION 187 technique is essentially JPEG technology in reverse. JPEG compression performs a ser ...