The 40D camera supports interchangeable lenses.
Knowing a few Canon EOS 40D camera tricks will increase the quality of your digital images ten-fold. The 10.1-megapixel 40D contains noise-reduction technology, which produces crisp images, and a 14-bit image conversion for vivid colors. The 40D also features several shooting modes, which accommodate portraits, landscapes, close-ups, moving objects and night portraits. When shooting in the field or at important events, incorporate a few techniques into your session for better and more interesting pictures.
Self-Timer
When taking self-portraits, picture clarity improves greatly with the use of a tripod and the Canon 40D self-timer function. Mount the camera on top of a tripod, press the "AF/Drive" button on top of the camera, and turn the navigation wheel to select from either "Self-Timer 1" or "Self-Timer 2." "Self-Timer 1" features a 10-second countdown, whereas "Self-Timer 2" features a quick, two-second countdown. After you press the "Shutter" button, the timer begins. Position yourself before the camera lens and watch for the increased blinking of the indicator light on front of the camera to signal the impending capture of the image.
Fill-Flash
When taking pictures of subjects in plentiful light, use the flash to better light the subject against a brightly lit background. Press the "Flash" button on the top of the camera to enable the flash. The flash pops up from the top of the camera. In all lighting situations, the flash fires when the "Shutter" button is pressed, lighting the subject nicely.
Focus-Lock
When photographing an off-center subject with the 40D, you might have problems focusing on the subject automatically. Remedy this by performing a focus-lock. Place the subject in the center of the viewfinder or LCD screen and press the "Shutter" button down halfway to acquire an automatic focus-lock on the subject. After the subject is in focus, continue to hold down the "Shutter" button while you recompose your image. Fully depress the "Shutter" button when ready. The subject is in focus regardless of the positioning within the image.
Subject Placement
Instead of placing the subject in the center of the frame, try positioning her in a corner for a more dynamic picture. Visualize a tic-tac-toe grid across the viewfinder: two horizontal lines crossing three vertical lines spaced evenly apart. The grid makes four intersection points. Take turns placing the subject in one of the four intersection points. When you're satisfied with your composition, incorporate the focus-lock trick and capture the image.
Tags: Shutter button, button camera, capture image, four intersection, four intersection points