In Broadcast February 2012 - 50


InSTUDIO Lighting The Way For A Brighter And Greener Future
By Kieron Seth One area where massive production cost savings can be realised is by utilising highly energy efficient LED lighting.
Most entertainment companies seek more than anything else to raise the roof. Famously, Pittsburgh’s NBC station WPXITV went the other way. They raised the floor. According to their environmental consultants, Cox Enterprises, the aim was to yield a 25 per cent reduction in heating and cooling costs. This may seem an unusual move for a TV outfit, but social, environmental and economic concerns have converged over recent years to drive broadcasters to look for power savings across their organisations. It is not just in the USA where an eye is on the electricity meter. The BBC’s stated aim of reducing electrical consumption by 20 per cent per person is aggressive, especially at a time when 3D and 4K image processing is requiring more computing power, not less. To track progress, the BBC and BAFTA have developed Albert, an online “carbon calculator” specifically designed to measure the environmental impact of programme production. Use of Albert is now compulsory within Vision Productions and Children’s TV at the British broadcaster. Organisations that are now members of Albert include Channel 4, IMG, ITV, Kudos, Shine, Sky, Talkback Thames and Twofour. This is clearly serious stuff. But how are these power saving targets to be met? According to the BBC’s “Low Energy Lighting Guide for TV Productions”, released in September 2011, a new approach to lighting is key. After all, it claims, as much as 80 per cent of the energy consumption in a production comes down to studio lighting. It goes on to suggest that savings of up to 50 per cent can be made by adopting new lighting technology. As a result, the BBC is becoming a considerable buyer of low energy technology. The green wave is hitting both sides of the Atlantic from San Francisco’s KPIX-TV to ITV’s Daybreak which have both recently put their focus on electrical efficiency by fitting their studios with state-of-the-art low energy lighting systems. bulb will last around 50,000 hours; an equivalent 14 Watt fluorescent tube will burn for 10,000 hours. The cost savings are clear, substantial and tempting for television companies. So is LED on the verge of dominance... isn’t it? Creative concerns about LED abound. They include the shadowing caused by multi-diode assemblies, and, as a spokesperson from Ianiro noted, “the sensitivity of LEDs to increases in drive current remains a weak point. LEDs are very susceptible to overheating beyond the manufacturers’ recommended limits, at which point their characteristics deteriorate significantly, with a reduction in light output, change in colour temperature, and a reduced durability. “As a result, Ianiro’s strategy appears to be to develop cautiously and test thoroughly before releasing product to market – such as its forthcoming fresnel unit.

Kieron Seth

50

Ianiro’s Ianiled 54

Bright Promise
There are many advantages to be gained from using LEL (Low Energy Lighting) – BBC Guide

One of the main engines of this change has been the rapid emergence of LED technology. Its headline figures are appealing: in a domestic setting, a 6 Watt LED

Simon Larn, Technical Director of Photon Beard concurs: “There have been several problems with using LEDs as studio lighting, some of which are now being solved. The first is colour – both consistency and colour rendering. Consistency is now far less of an issue with most manufacturers, but colour rendering, and how to accurately define it for the purpose of television lighting is a debate that is very much still underway. “Traditional CRI (Colour Rendering Index) values do not adequately define the spikes and troughs in the spectrum that are prevalent with single die LEDs, and most importantly, how subtle colours such as skin tones will look on screen. “The problem has been that individual products from different manufacturers also use LEDs from different manufacturers, so each LED product has a different spectral content making results unpredictable. “This situation has not really existed before – in traditional luminaires, the lamps would be predictable and colour performance was not dependant on who had manufactured the fixture.”
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Table of Contents for the Digital Edition of In Broadcast February 2012

In Broadcast - February 2012
Contents
Pictorvision Academy Award
The Ultimate Strategy to Win
Importance of Smooth Streaming
Sony Vegas Pro 11 GPU Speed Boost
Trilogy Communications Celebrates 25 years
CES 2012 Smarter Systems on Show
Vitec Videocom CEO Joop Janssen has the Answers
Space Saving 3D System
OpticamSWITCH Success at Swiss TV
In Broadcast February 2012 - 1
In Broadcast February 2012 - 2
In Broadcast February 2012 - Contents
In Broadcast February 2012 - Pictorvision Academy Award
In Broadcast February 2012 - 5
In Broadcast February 2012 - 6
In Broadcast February 2012 - 7
In Broadcast February 2012 - 8
In Broadcast February 2012 - 9
In Broadcast February 2012 - 10
In Broadcast February 2012 - 11
In Broadcast February 2012 - 12
In Broadcast February 2012 - 13
In Broadcast February 2012 - 14
In Broadcast February 2012 - 15
In Broadcast February 2012 - 16
In Broadcast February 2012 - 17
In Broadcast February 2012 - 18
In Broadcast February 2012 - 19
In Broadcast February 2012 - The Ultimate Strategy to Win
In Broadcast February 2012 - 21
In Broadcast February 2012 - 22
In Broadcast February 2012 - 23
In Broadcast February 2012 - 24
In Broadcast February 2012 - 25
In Broadcast February 2012 - 26
In Broadcast February 2012 - 27
In Broadcast February 2012 - 28
In Broadcast February 2012 - 29
In Broadcast February 2012 - 30
In Broadcast February 2012 - 31
In Broadcast February 2012 - 32
In Broadcast February 2012 - 33
In Broadcast February 2012 - Importance of Smooth Streaming
In Broadcast February 2012 - 35
In Broadcast February 2012 - 36
In Broadcast February 2012 - 37
In Broadcast February 2012 - 38
In Broadcast February 2012 - 39
In Broadcast February 2012 - Sony Vegas Pro 11 GPU Speed Boost
In Broadcast February 2012 - Trilogy Communications Celebrates 25 years
In Broadcast February 2012 - 42
In Broadcast February 2012 - 43
In Broadcast February 2012 - 44
In Broadcast February 2012 - 45
In Broadcast February 2012 - 46
In Broadcast February 2012 - 47
In Broadcast February 2012 - 48
In Broadcast February 2012 - CES 2012 Smarter Systems on Show
In Broadcast February 2012 - 50
In Broadcast February 2012 - 51
In Broadcast February 2012 - 52
In Broadcast February 2012 - 53
In Broadcast February 2012 - 54
In Broadcast February 2012 - Vitec Videocom CEO Joop Janssen has the Answers
In Broadcast February 2012 - Space Saving 3D System
In Broadcast February 2012 - 57
In Broadcast February 2012 - 58
In Broadcast February 2012 - 59
In Broadcast February 2012 - 60
In Broadcast February 2012 - 61
In Broadcast February 2012 - OpticamSWITCH Success at Swiss TV
In Broadcast February 2012 - 63
In Broadcast February 2012 - 64
In Broadcast February 2012 - 65
In Broadcast February 2012 - 66
In Broadcast February 2012 - 67
In Broadcast February 2012 - 68
In Broadcast February 2012 - 69
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