Tips for taking sharp and crisp images - A deeper depth of field can help avoid out of focus images. The depth of field is the range of the image that is in focus in front of and behind the point of focus.
NOTE You can filter the displayed lenses by adding a checkmark to the [Select a lens category] checkbox. Using the Digital Lens Optimizer in Digital Photo Professional Ver.4.x
This camera is approximately 2.5x more sensitive to hydrogen-alpha light (656nm) than the EOS 20D. Photographs of normal subjects that reflect a lot of infra-red light taken with this camera will therefore appear more red than the actually are. An infra-red cutoff filter (commercially available) can be used to reduce this redness.