The EOS 40D is highly expandable and fully compatible with wide-ranging accessories and equipment. Images can quickly be transferred from the camera to your PC via Wireless File Transmitter WFT-E3/E3A (IEEE 802.11b/g) or to hard drives and GPS equipment via USB 2.0 Hi-Speed. A Connection Wizard enables password-protected support in FTP, PTP, and HTTP communication modes.

The EOS 40D is also fully compatible with Canon's flagship Speedlite 580EX II, which offers leading-edge performance and allows flash settings to be manipulated from the camera's menu screen.




Various options are available for expanding the capabilities of your EOS 40D. The dedicated BG-E2N high-capacity Battery Grip doubles the number of shots you can take before recharging the batteries. It also makes vertical shooting as easy as horizontal shooting. Sealed for increased resistance to dust and water, the grip accommodates two BP-511A Battery Packs and also supports AA batteries as an emergency option. A hand strap is available separately.

The EOS 40D is fully compatible with Canon's world-renowned lineup of EF lenses, including EF-S lenses. Engineered with micron precision and featuring sophisticated optics, these lenses are available in over 50 models ranging from 14mm ultra-wide-angle to 600mm super-telephoto. When mounted, EF lenses communicate f-number, focal length, and other data to the camera for fast, precise operation.

Three new interchangeable Ef-series focusing screens are available: the Ef-A Standard Precision Matte, Ef-D Precision Matte with Grid, and Ef-S Super Precision Matte, which offers easy determination of the precise point of sharpest focus during manual focusing and accurately displays background blur.

Canon facilitates the workflow of professional photographers by providing various advanced computer software on the bundled EOS DIGITAL Solution Disk.

New improved Digital Photo Professional (DPP) enables high-speed processing, viewing, and editing of RAW images photographed with the EOS 40D. For example, you can develop and display images quickly on a computer screen, simultaneously convert RAW images into JPEG and TIFF images, drag & drop multiple thumbnails to desired locations for easy sorting, easily adjust images in real time using image adjustment functions accessible in the tool palette, and apply noise reduction to individual images. DPP supports sRAW images and images appended with aspect ratios or GPS data.

EOS Utility allows real-time viewing of images, via Remote Live View Mode, on your PC monitor. Controls are provided for displaying a grid, recomposing the shot, adjusting the focus, and making various other remote adjustments. These advanced capabilities give studio photographers, astrophotographers and others a number of options for meeting the demands of their profession.

New Picture Style Editor makes it easy to create and register personalized Picture Style files. You can create a new Picture Style by simply selecting an existing Picture Style (Standard, Portrait, Landscape, Neutral, or Faithful), adjusting image parameters (color tone, saturation, contrast and sharpness), making minute adjustments to specific colors, and fine-tuning gamma characteristics (brightness and contrast). The new Picture Style can then be registered in your camera using EOS Utility. Once registered, you can apply it directly to captured JPEG photos or use bundled DPP or RAW Image Task to apply it to your RAW photos.