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Light and Human Vision

About the visible spectrum, human eye organ, similarities with cameras, the persistence 'defect'

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In order to understand some of the basic concepts of television and CCTV, one has to understand what light is, and how does human eye work. In this lecture we start from the nature of light, and then explain the visible spectrum as seen by human eye, as well as how this relates to imaging sensors. We then explain the human eye resolving power, which defines the optimum viewing distances in designing control rooms, and last, but not least we cover the human eye 'defect' called persistence, which is the basis for understanding motion pictures in cinematography and television.

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Your Instructor


Vlado Damjanovski
Vlado Damjanovski

Vlado Damjanovski is an internationally renowned CCTV expert, published author, trainer and App developer with over 37 years industry experience.

With an Honours degree in Electronic Engineering, Vlado authored the industry’s ‘CCTV bible’, CCTV - from light to pixels (4th ed), also available in Korean, Russian and German. The ViDi Labs Academy video lectures are based on these books.

Vlado has been producing industry specific test charts for over twenty-five years and offers a complete IP camera evaluation and measurement service compliant with the IEC standards. His recent work has been the development of software for automated camera analysis to suit the latest ViDi Labs test chart.

Furthermore, Vlado has developed unique App - ViDiLabs calculator - which is available for installers, integrators and consultants to assist in finding optimal camera settings (for iOS and Android).

Vlado has helped develop the Australian and New Zealand CCTV Standards (AS4806) in his capacity as chief contributor. He is currently a member of the IEC TC-79 group where he contributes towards the development of the international standards 62676 for IP CCTV.

Vlado now brings you the only complete online study of IP CCTV technology, anywhere in the world, based on his books.


Course Curriculum


  Light and Human Vision
Available in days
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Frequently Asked Questions


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