Decoding The Lossless Zooming Technology In Smartphone Cameras !

Dinesh Vishwakarma

[br][br]Smartphone cameras has been improving at an exponential rates since last 2-3 years. We have seen camera algorithms, dual / triple cameras and many such technologies evolve and improve. In the last episode, we discussed one such technology i.e. the Time-of-flight camera sensor.[br][br]In this second edition of Talking Tech, we would be discussing yet another camera development in the smartphone world, i.e the "[img src="static/image/smiley/default/titter.gif" smilieid="9" border="0" alt=""]eriscope Lenses", popularly known as "5x/10x Optical Zoom Lossless Technology". [br][br][strong]What Are Periscope Lenses & What Is This Zooming Tech All About ?[/strong][br][br][strong]Defining Periscope:[/strong][br][br]A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position.[br][br]In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle.[br][br][br][strong]The Theory:[/strong][br][br]In theory, a periscope lens would enable a camera or smartphone maker to create a sophisticated optical zoom system, complete with motorized internal optics akin to ones in long lens tubes[br][br][br] [br][br][br][strong]The Working Principle[/strong][br][br]The working principle behind this technology is:[br][br][ul][li]A prism in the back of the phone reflects light 90-degrees so that the sensor can be placed facing parallel to the back of the device allowing a 5x optical zoom.[br][/li][/ul][br] [br][br]In Oppo's Reno phone the technology works as:[br][br][ul][li]Oppo has placed the image sensor and additional lenses perpendicular to the body of the phone rather than sitting parallel and flat.[br][/li][/ul][ul][li]It uses a mirror setup to redirect light from the camera cutout towards the image sensor.[br][/li][/ul][ul][li]This placement allows Oppo to provide for a 35mm equivalence of 160mm, forming the “10x” zoom part of the setup. By switching between these three cameras, Oppo provides for a full 10x range of lossless zoom with variable focal length from 16mm – 160mm.[br][/li][/ul][strong]The Darker Side: Maybe Yes / Maybe No !![/strong][br][br]Every technology that comes brings in its own set of pros and cons. This is no such exception. There can be several threats attached with this type of camera lenses. This level of zooming can enable someone to keep an eye on you from quite far distance without even giving you a hint, making it a Spy Camera.[br][br][strong]Reviews & Conclusions[/strong][br][br]The periscopic camera module has its own pros & cons depending on its implementation and use. For most part, it enables better photography via our smartphones.[br][br][strong]Source:[/strong][strong] [/strong][a href="https://venturebeat.com/2019/03/06/periscope-zoom-lenses-stunk-in-cameras-but-may-get-better-in-phones/"][strong]VentureBeat[/strong][/a][strong] | [/strong][a href="https://www.androidpit.com/are-periscope-cameras-the-next-trend-in-smartphone-photography"][strong]AndroidPit[/strong][/a]

prabhat870701

Nice share

sakhr68

Nice share brother