Cctv Lens - Bookshelf
The iris in the eye is a muscle-controlled membrane; the automatic iris in a CCTV lens is a motorized device. Of the many different kinds of lenses used in CCTVsecurity applications, the most common is the FFL lens, which is found in the ...
About this book
A complete reference on CCTV technology Gives practical advice on the proper uses of CCTV to best protect against crime Contains more than 100 photos of the most modern equipment available.
The retina of the human eye differs from any CCTV lens in that it focuses a sharp image only in the central 10% of its total 160 FOV. All vision outside the central focused scene is out of focus. This central imaging part of the human eye can be ...
About this book
This revision of the classic book on CCTV technology, CCTV Surveillance, provides a comprehensive examination of CCTV, covering the applications of various systems, how to design and install a system, and how to choose the right hardware. Taking into account the ever-changing advances in technology using digital techniques and the Internet, CCTV Surveillance, Second Edition, is completely updated with the recent advancements in digital cameras and digital recorders, remote monitoring via the Internet, and CCTV integration with other security systems. Continuing in the celebrated tradition of the first edition, the second edition is written to serve as a useful resource for the end-user as well as the technical practitioner. Each chapter begins with an overview, and presents the latest information on the relevant equipment, describing the characteristics, features and application of each device. Coverage of aging or obsolete technology is reduced to a historical perspective, and eight brand new chapters cover digital video technology, multiplexers, integrated camera-lens-housing, smart domes, and rapid deployment CCTV systems.* Serves as an indispensable resource on CCTV theory* Includes eight new chapters on the use of digital components and other related technologies that have seen a recent explosion in use * Fully illustrated, the book contains completely updated photographs and diagrams that represent the latest in CCTV technology advancements
Theoretically, it is better to know the lens characteristics for a continuous variation of black to white (in the form of a sine wave), and not just for stripes that abruptly change from black to white. This would be especially suitable for TV lenses ...
About this book
The new edition of CCTV, a high-level professional reference, is expanded to cover all video compression techniques used in the ever-increasing assortment of digital video recorders (DVRs) available on the market today. In addition to demystifying DVR technology, the third edition also clarifies the technology of data networking and explains various compression techniques. Along with all this, the book retains the particulars that made the previous editions convenient and valuable, including details of CCD cameras, lenses, coaxial cables, fiber-optics, and system design. Updated to address digital techniques, networking, and the Internet in closed-circuit televisionIncludes brand new sections on CCTV networking, digital video recorders (DVRs), various video compression techniques, and understanding pixels and digital image qualityFully illustrated with dozens of photographs, tables, checklists, charts, diagrams, and instructions