The EOS 50D is compatible with all Canon lenses in the EF and EF-S lineup, ranging from ultra-wide angle to super telephoto lenses. Canon lenses employ advanced optical expertise and micron-precision engineering to deliver unprecedented performance in all facets of the photographic process. Special optical technologies, such as Aspherical, ultra-low dispersion, or fluorite elements are featured in the universally acclaimed L-series lenses. And Canon's Optical Image Stabilizer technology is featured in select lenses to minimize the effect of camera shake. Through Canon lenses, photographers can truly maximize the quality and liberating performance of the EOS 50D.
The EOS 50D features the acclaimed E-TTL II flash metering system. With any of the flashes in the EX Speedlite line, E-TTL II provides reliable flash output whether shooting fill-in flash pictures in sunlight, or using flash in total darkness. With E-TTL II, the exact same 35-zone metering sensor used for measuring ambient light is also used for flash metering – giving even finer metering command of the image area. If you prefer a broader area for flash metering, there's a menu setting to change to "Average" flash metering—where the entire 35-zone area is measured evenly for flash exposure.
The Canon Speedlite 430EX II is the ideal step-up accessory for powerful flash shooting with the EOS 50D. It has excellent flash power (maximum guide number of 141 ft./43m at ISO 100), and is the perfect way to get great flash pictures when you can't get right up to the subject. The 430EX II is also great for bounce flash, with its tilting and swiveling flash head. It automatically zooms the flash head to cover lenses ranging from 16mm up to 105mm or longer with the EOS 50D. Of course, it works with the camera to provide full E-TTL II automatic flash exposure. And the 430EX II has a powerful AF-assist beam, which allows the camera to autofocus even in total darkness on subjects as far as 32 ft. from the camera.
Speedlite 430EX II
Canon EOS Digital Solution Disk (Version 17.0)
The EOS 50D comes bundled with an updated Canon EOS Digital Solution Disk, which features powerful software programs designed to extend the EOS experience to the computer. These include Canon's EOS Utility (Version 2.5), Digital Photo Professional (Version 3.5), ZoomBrowser EX for Windows® (Version 6.2), ImageBrowser for Macintosh® OS X (Version 6.2), the Picture Style Editor (Version 1.4), PhotoStitch (version 3.2), WFT Utility (version 3.2). Each application is designed to perfect the captured images and streamline the digital workflow.
EOS Utility (Version 2.5) 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.
Digital Photo Professional (Version 3.5) 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 Dust Delete Data Detection tool for cleaner images.
ZoomBrowser EX (Version 6.2) for Windows and ImageBrowser (Version 6.2) 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.
Picture Style Editor (Version 1.4)
Canon's Picture Style Editor enables photographers to create custom Picture Style profiles that can be used to customize the appearance of JPEG and RAW images captured with EOS Digital SLR cameras. Picture Style files created with Picture Style Editor can be loaded into the EOS cameras that support Picture Style and may also be used when processing RAW images in Canon software applications Digital Photo Professional, ZoomBrowser EX (for Windows) and ImageBrowser (for Mac).
With some lenses, the peripheral AF points may become sensitive to either vertical or horizontal lines (they will not function as cross-type AF points). These lenses are: EF 35-80mm f/4-5.6, EF 35-80mm f/4-5.6 II, EF 35-80mm f/4-5.6 III, EF 35-80mm f/4-5.6 USM, EF 35-105mm f/4.5-5.6, EF 35-105mm f/4.5-5.6 USM, EF 80-200mm f/4.5-5.6 II, EF80-200 f/4.5-5.6 USM.