Landscape scene mode is a dedicated automatic exposure mode found on many digital cameras that optimises the camera's settings specifically for photographing outdoor landscapes and scenic views. When selected, the camera automatically prioritises a small aperture - a high f-number such as f/11, f/16, or smaller - in order to maximise the depth of field and ensure that the greatest possible range of the scene, from the foreground through to the far distance, is rendered in acceptably sharp focus simultaneously.
The relationship between aperture and depth of field is central to landscape photography, where it is generally desirable to have the entire scene sharp and detailed from the nearest elements in the frame to the most distant. By selecting a small aperture, landscape scene mode takes advantage of the optical principle that reducing the size of the aperture increases the zone of acceptable sharpness extending both in front of and behind the point of focus, allowing a single focused distance to render the full depth of a landscape scene with consistent sharpness throughout.
In addition to aperture selection, landscape scene mode typically makes several other automatic adjustments to optimise image quality for outdoor scenic photography. The flash is usually disabled, as artificial flash is ineffective at the distances involved in landscape photography and would serve no useful purpose. White balance may be adjusted to enhance the natural blues of sky and water and the greens of foliage, and some implementations of the mode boost colour saturation slightly to produce more vivid and visually impactful renditions of outdoor scenes. The ISO is generally kept as low as possible to minimise digital noise and preserve the fine tonal gradation and detail that are characteristic of high quality landscape images.
While landscape scene mode provides a convenient and effective automatic solution for general outdoor photography, experienced landscape photographers often prefer to work in aperture priority or full manual mode, where they can exercise precise control over the specific aperture, shutter speed, ISO, and focus distance settings to achieve the exact creative and technical result they have in mind, including techniques such as hyperfocal distance focusing to maximise depth of field with scientific precision