The Depssi card (Depth of field, sunrise, sunset indicator) is a handy guide/reference card that has two functions; it enables the outdoor photographer to quickly select the hyperfocal distance for different lenses (or zoom settings) using various apertures. 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.[1]


  1. ^ Andrews, Ian (July 27, 2008). "The DEPSSI card Review". ePHOTOzine. Retrieved June 4, 2018.