Depth mode is a program shooting mode found on some Canon cameras that automatically selects the optimum aperture to achieve sufficient depth of field, ensuring that the entire subject appears sharp from foreground to background. The camera analyses the scene and adjusts settings to maximise sharpness across the image, making it particularly useful for group photos, landscapes, and scenes with multiple subjects at different distances. Depth mode simplifies achieving front-to-back focus without needing manual adjustments, helping photographers produce well-focused, evenly sharp images with ease.