Cengage and Sideways provided me an evaluation copy of the $14.99 iPad app. David Busch’s Canon EOS Rebel T2i/550D Companion AppThis is one of several multimedia ebook apps that have been making their way to the iPad over the past couple of months. I’ve become extremely interested in this app category that attempts to move beyond the “replica” ebook familiar to Kindle users. This book focuses on providing a multimedia overview of the use of the popular Canon T2i DLSR camera. I started comparing it to the $9.99 Lights, Camera, Capture! iPad Multimedia eBook App multimedia iPad ebook app I reviewed a few weeks ago.One of the big differences aside from price is that Busch’s app does not require Internet connectivity to access its media. This is a big plus if you are using it to learn detailed use of the T2i camera in locations without 3G or WiFi access.I appreciated the interactive nature of the app that lets you, for example, tap buttons colored red on a 3D rotating view of the T2i camera to learn how each button functions or the interactive T2i menu options. However, I was disappointed that there weren’t more photographic examples of how choosing various options or settings affected how a picture might look. I was also disappointed that only three video demo files are included. It is especially disappointing since Busch’s video demos have a much higher resolution and clarity than the “Lights, Camera, Capture!” ebook app.The content itself is instructive and useful. It appealed to me personally because I’ve been considering buying a T2i. However, my recommendation to the publisher is that this app’s “natural price” (the price at which I believe people would feel comfortable buying it) is between $6.99 and $9.99. _________________________________________________________________________