EF & EF-S Lenses
EOS 40D 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 in select lenses minimizes the effect of camera shake. Through Canon lenses, photographers can truly maximize the quality and liberating performance of the EOS 40D.
The EOS 40D 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.
Canon's Speedlite 580EX II is perfectly suited to the EOS 40D. It has improved reliability of communications through the direct contacts, has a metal flash “foot,” and is dust- and water-resistant. Other new features include a PC socket on the flash unit, and an external metering sensor for non-TTL auto flash if desired. With the EOS 40D, you can set most flash settings directly from the camera’s menus. It has the same power as the previous Speedlite 580EX (maximum guide number of 190 ft./58m 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 40D’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.
Speedlite 580EX II
Wireless File Transmitter WFT-E3A
Designed exclusively for the EOS 40D, the Wireless File Transmitter WFT-E3A incorporates a number of significant new features into a robust, camera-powered system to make wireless transfer faster and easier than ever. It transfers images wirelessly through either 802.11 b or g, has an Ethernet connection for situations where wireless transfer is impractical or impossible, as well as a more powerful antenna, capable of transmission up to 490 feet/150m* from the computer, or an accessory router/access point receiver. It can connect to compatible third-party GPS device via USB; generating GPS information in each image's EXIF data. Or, you can plug a compatible USB v.2.0 hard drive into the transmitter's USB port, and actually shoot directly to a large portable hard drive. (note: the WFT-E1A or WFT-E2A Wireless Transmitter units are not compatible with the EOS 40D)
Wireless File Transmitter WFT-E3A
* Maximum distance requires access point with separate antenna; wireless transmission range dependent upon environmental factors and type of receiver in use.
Canon EOS Digital Solution Disk (Version 15.0)
The EOS 40D 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 ZoomBrowser EX for Windows® (Version 5.8), ImageBrowser for Macintosh® OS X (Version 5.8), Digital Photo Professional (Version 3.1), the totally new Picture Style Editor (Version 1.0), Canon's EOS Utility (Version 2.1), RAW Image Task (Version 2.7), PhotoStitch, and PTP TWAIN Driver. Each application is designed to perfect captured images and streamline the digital workflow. ZoomBrowser EX v.5.8 and Digital Photo Professional v.3.1 for Windows are compatible with the new Windows Vista operating system, too.
Digital Photo Professional (Version 3.1) 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.
EOS Utility (Version 2.1) 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 5.8) for Windows and ImageBrowser (Version 5.8) 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.
RAW Image Task (Version 2.7) for Windows/Macintosh
This software is an integrated component of ZoomBrowser EX (Windows) or ImageBrowser (Mac). It allows processing of RAW images from EOS cameras, including the new EOS 40D, with a variety of adjustment possibilities. These options, as well as the overall color, contrast and "look" of RAW Image Task, closely mimic the characteristics of Canon's in-camera JPEG processing.
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.