SHOOT SHARPER IMAGES AT WIDE APERTURES
Master the use of a perspective-control lens to achieve deep depth of field without the use of very high f-stops
How to use a tilt/shift lens for deep DOF
When shooting without the support of a tripod or monopod, it can be a challenge to utilise f-stops of higher than f8, as this will require the exposure to be lengthened, to avoid underexposure. This in turn will increase the risk of introducing loss of sharpness through camera shake. This is especially problematic when shooting indoors, where ambient light levels are already low. However, when shooting low to the ground, as in the shot shown here, narrower apertures are essential to provide a range of focus that covers both foreground and background detail. A solution is to use a tilt/shift lens to extend the depth of sharpness to cover all areas of the frame.
While the tilt function is most commonly associated with the characteristic miniature effect today, it has been a staple of DOF control in the field of large format and view camera photography for many years. By carefully tilting the plane of focus so that it intersects your near and far subjects at the correct angle, both can be rendered in-focus, even at maximum aperture. This provides a perfect compromise between depth of field and exposure time, allowing the photographer to shoot handheld and create compositions with depth, even in low-light conditions.
The shift function can also still be used to correct perspective.