EF & EF-S Lenses
The EOS Digital Rebel XTi is compatible with all Canon lenses in the EF lineup, ranging from ultra-wide angle to super telephoto lenses, and including Canon's EF-S series lenses, manufactured specifically for Canon’s APS-C sized digital sensor. Canon lenses employ advanced optical expertise and micron-precision engineering to deliver unprecedented performance in all facets of the photographic process. Aspherical optics and fluorite elements, for example, are featured in the universally acclaimed L Series lenses, and Canon's Image Stabilizer technology in select lenses minimizes the effect of camera shake. Through Canon lenses, photographers can truly maximize the quality and liberating performance of the EOS Digital Rebel XTi.

Flash Photography
The EOS Digital Rebel XTi features the acclaimed E-TTL II flash metering system. Whether using its flush-mounted integral flash (guide no. of 43 ft./13m at ISO 100), or any of the flashes in the EX Speedlite line, E-TTL II provides reliable flash output through numerous exposures.

Canon's Speedlite 430EX is perfectly suited to the EOS Digital Rebel XTi. It includes a maximum guide number of 141 ft./43m at ISO 100, and when mounted on the camera, automatically compensates for the camera’s sensor size, enabling high output flash, with more flashes per charge. It includes an AF-assist Beam, which works in conjunction with the EOS Digital Rebel XTi’s focusing system, and automatically sends color temperature information to the camera when the flash fires, for more accurate white balance rendition with flash photography.

Additional Accessories
In addition to Canon's EF lenses and Speedlite flashes, many other accessories are designed by Canon to work perfectly with the EOS Digital Rebel XTi. The Battery Grip BG-E3 adds a vertical shutter release, and can hold two NB-2LH Battery Packs for increased shooting capacity. Canon's Semi Hard Case EH18-L can accommodate the EOS Digital Rebel XTi with a small zoom lens (an EF-S 18-55mm is included in the EOS Digital Rebel XTi Lens Kit).

Software

Canon EOS Digital Solution Disk (Version 13.0)
The EOS Digital Rebel XTi comes bundled with the updated Canon EOS Digital Solution Disk (Version 13.0), which features powerful software programs designed to extend the EOS experience to the computer. These include Canon's ZoomBrowser EX for Windows® (Version 5.7), ImageBrower for Macintosh® OS X (Version 5.7), Digital Photo Professional (Version 2.2), Canon’s EOS Utility (Version 1.1) and PhotoStitch (Version 3.1). Each application is designed to perfect captured images, and streamline the digital workflow.

Digital Photo Professional (Version 2.2) is an image processing program that enables high-speed RAW image processing, high-speed previewing for real-time image adjustment and support for sRGB, Adobe RGB and Wide Gamut RGB color spaces. Because it’s CMS (Color Management System) compatible, Digital Photo Professional allows for easy image layout and printing in Adobe RGB in conjunction with Easy-PhotoPrint and PictBridge printers. It also features the Digital Rebel XTi’s Dust Delete Data Detection tool for cleaner images.

EOS Utility (Version 1.1) for Macintosh or Windows handles the connection between the camera and computer, whenever they’re connected via USB. It allows remote controlled shooting from the computer, handles downloading of images from the camera to the computer, and allows seamless linking to either Canon’s ZoomBrowser/ImageBrowser or Digital Photo Professional software once images have been copied to the hard drive. Furthermore, it’s used to upload settings back into a USB-connected camera.

ZoomBrowser EX (Version 5.7) for Windows and ImageBrowser (Version 5.7) for Mac OS X are the easy, user-friendly options for viewing and editing of JPEG and even RAW image files. Both allow viewing of numerous types of images including finished TIFF and BMP files. Both also have a variety of search options for finding images, allow re-naming of single images or batches of files, and offer a variety of options for printing without using a separate image-editing program.