The Depssi card (

Depth of field The depth of field (DOF) is the distance between the nearest and the farthest objects that are in acceptably sharp focus (optics), focus in an image captured with a camera. See also the closely related depth of focus. Factors affecting depth ...

, sunrise, sunset indicator) is a handy guide/reference card that has two functions; it enables the outdoor

photographer A photographer (the Greek φῶς (''phos''), meaning "light", and γραφή (''graphê''), meaning "drawing, writing", together meaning "drawing with light") is a person who uses a camera to make photographs. Duties and types of photograp ...

to quickly select the

hyperfocal distance In optics and photography, hyperfocal distance is a distance from a lens beyond which all objects can be brought into an "acceptable" focus. As the hyperfocal distance is the focus distance giving the maximum depth of field, it is the most desi ...

for different lenses (or

zoom Zoom may refer to: Arts, entertainment and media Film * ''Zoom'' (2006 film), starring Tim Allen * ''Zoom'' (2015 film), a Canada-Brazil film by Pedro Morelli * ''Zoom'' (2016 Kannada film), a Kannada film * ''Zoom'' (2016 Sinhala film), a Sr ...

settings) using various

aperture In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image o ...

s. On the reverse side of the card, there are the angles/positions of sunrise and sunset for every month. The card is made in a durable plastic suitable for prolonged use. The size of a credit card, it can be tucked into a wallet/purse or secured to your camera bag until needed.

References

{{photography-stub Photography equipment