The reference to the Dock2.psd image should have been to the Dock2.tif image in the chapter 2 folder, so the exercise goes like this:

Figure 2.2 Reflective scanning emphasizes the extremes in tonal distribution within a photograph, whereas transparency scanned Photo CD images retain clarity in the tonal extremes as well as a good tonal balance in the midtones.

If you'd like to witness the qualitative difference between a reflective scan and a transparency scan, open (in Photoshop) both the Dock1.tif and Dock2.tif images from the Chap02 folder on the Companion CD. Dock1 is from a flatbed scanner, and Dock2 is from a Photo CD

Now, let's say that your client does not have the negative to Dock1.tif. You are forced to work with this image in Photoshop. Don't despair; with a few cosmetic touchups you can bring some life to the image, as you'll learn in the following steps:

Adjusting Tone, Balance, and Focus from a Scanned Image

1. Open the Dock1.tif image from the Chap02 folder on the Companion CD. You might also want to open Dock2.tif as a reference for your work.
2.  With Dock1.tif in the foreground, press Ctrl(Cmd)+L to display the Levels command.