Engineering:Depssi
From HandWiki
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.[1]
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.[2]
References
- ↑ "The long, involved history of the setting sun" (in en-US). 2019-10-11. https://lens.monash.edu/@science/2019/10/11/1376902?slug=how-the-location-of-sunrise-and-sunset-changes-throughout-the-year.
- ↑ Andrews, Ian (July 27, 2008). "The DEPSSI card Review". https://www.ephotozine.com/article/the-depssi-card--review-4538.
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