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In November 2013, Ring was founded as Doorbot by Jamie Siminoff. Doorbot was crowdfunded via Christie Street, and raised US$ 364,000, more than the $250,000 requested. [1] [4] [5] Siminoff's team envisioned the product's concept as an "alarm system literally turned inside out" in comparison to other security systems, describing it as a "pre-crime" system. [6]
Ring camera Contains a miniature camera. [16] [7] [78] [8] Checkbook reader Uses ultra-violet light to read previously written material by picking up the indentations of pen marks on paper. [77] Credit card lock pick Has an electronic ability to open locks. The Sharper Image brand. [77] Zorin's walking stick
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Ring has expanded its security camera. Smart security cameras have become extremely popular over the past few years because they offer a simple way to keep tabs on your home while you’re away ...
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It integrates with Ring's smart doorbell and surveillance camera products, allowing users to share photos and video clips from the devices' cameras to accompany their posts. The app is also used as part of partnerships between Ring and local law enforcement agencies, who can make verified public service posts on the service, and use an online ...
An LED-based ring flash. A ring flash is a circular light that is often operated with a camera lens in the center to take photographs. Unlike point light sources, a ring flash can illuminate a subject with minimal shadows by closely and evenly surrounding the optical axis of the camera lens.
On modern cameras using auto exposure the decrease in exposure is corrected for by the camera, but when not using auto exposure this has to be calculated and taken into account when setting exposure. The exposure compensation, called the bellows factor , is a dimensionless ratio that is applied to the relative aperture ( f-number ), resulting ...