History

We set up Photoshop to record all processing steps in the image metadata using the Preferences r General dialog. We check the History Log option and select Metadata under Save Log items (®).

General Interface File Handling Performance Cursors

Transparency & Gamut

Units & Rulers

Guides. Grid & Slices

Plug-Ins

Type

Color Picker: ' Adobe

HUD Color Picker: J Hue Strip

Image Interpolation: [ Bicubic (best for smooth gradients)_I

Q Auto-Update Open Documents ®Beep When Done 0Dyn amic Color Sliders 0 Export Clipboard 0 Use Shift Key for Tool Switch

® Animated Zoom 0Zoom Resizes Windows 0Zoom with Scroll Wheel C Zoom Clicked Point to Center 0 Enable Flick Panning

0 Resize Image During Paste/Place 0 Place or Drag Raster Images as Smart Objects

Save Log Items To: © Metadata O Text File OBoth Edit Log Items: [ Detailed

f Reset AH Warning Dialogs

Figure 4-11: Use the general preferences to select which steps are recorded in the file's log.

Use option ® to select the degree of detail for your log. If you select Detailed, you can later scrutinize all the processing steps performed on the image via File r File Info r History. This super-useful functionality was introduced with Photoshop CS.

Figure 4-12:

The log of processing steps performed on an image. This feature increases the file size a little, but is a great record of what has been done to an image and when.

Figure 4-12:

The log of processing steps performed on an image. This feature increases the file size a little, but is a great record of what has been done to an image and when.

Photoshop uses XML or XMP format to save metadata internally. We will be coming across XMP quite often in the course of the workflow. XMP data can be embedded in image files (which helps to preserve congruency when images are moved, renamed, or copied), or in a separate XMP file (selectable in menu ® in figure 4-11). This file has the same name as the image file it is associated with and the file extension ".xmp". XMP data can be read by all Adobe applications and also by some other manufacturers. It is useful during later processing stages.

XMP stands for "Extensible Metadata Platform", which is an ISO standard used for storing and exchanging metadata in all Adobe applications.

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