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Ask the Expert with Broadcast Service Centre

Ask the Expert with Broadcast Service Centre’s Dave LlewellynThis month we visited independent service company, Broadcast Service Centre Ltd (BSC), specialising in providing top quality technical support for a wide range of equipment within the Broadcast and Pro video industry. Dave Llewellyn has worked as a broadcast engineer for BSC (Broadcast Se...

Submitted by Dennis Lennie

Published 01 May 2009

Eye to Eye. Whats new in test and measurement 2009

The transition from analogue to digital programme production, storage and delivery lulled some innocent folk into anticipating a world without need for test equipment. If required at all, so the thinking went, all signal analysis would be performed in software. Maybe someday. For now, the T&M sector remains alive and well. The following summary out...

Submitted by Dennis Lennie

Published 01 May 2009

HD Camera Measurements and getting the most out of your c...

Recap Parts1 and 2:Parts 1 and 2 covered the theory and actual measurement of white shading, making sure that the camera non-linearities introduced by various different lens systems on a particular camera are compensated. In this issue, Part 3 will investigate setting up colourimetry and exposure as well greyscale adjustments using a waveform monit...

Submitted by Dennis Lennie

Published 01 May 2009

Filters for HD Cinematography

The availability of low-cost HD camcorders with film-style tools, like 24 frame-per-second imaging and quality lenses, has put filmmaking capability in the hands of many. To achieve a film-style look, a director of photography can add a compliment of optical filters. Such filters can not only make color and other corrections to the image as it is s...

Submitted by Dennis Lennie

Published 01 April 2009

HD Camera Measurements Getting the most out of your camer...

Recap Part 1:In part 1 of this knowledge series we discussed the requirements for making correct white shading measurements in terms of the equipment used. Part 2 now will focus on performing the actual measurements and making sure that we achieve optimum linearity and dynamic range. White shading measurementPower up the camera, waveform monitor an...

Submitted by Dennis Lennie

Published 01 April 2009

Mobile communications Eye to Eye

Point to point communication via satellite is one of the most useful tools available to television and radio reporters in a world of fast news distribution. This short summary looks first at some of the newest SNG link kit and then at broadcast-related telecoms. Advent Communications has introduced an enhanced version of its 1.5m and 1.8m NewSwift...

Submitted by Dennis Lennie

Published 01 March 2009

How to choose a Microphone

The microphone is probably the most important tool we use when recording sound. Plugging it into the best pre-amplifier will optimise the quality of the signal but no amount of processing will fix the wrong sound coming from your microphone. The device for turning movements in the air into an electrical signal is a creative instrument and should be...

Submitted by Dennis Lennie

Published 01 February 2009

Choosing the right tripod

Camera support equipment is constantly changing as technological advances influence what can be created in the viewfinder. New generations of ultra compact cameras are enabling the camera operator to explore and get into the action as never before and longer lenses allow close-up views previously unobtainable. But with so much choice, how do you se...

Submitted by Dennis Lennie

Published 01 January 2009

Camera rigs and lighting

The biggest single story at IBC this year, apart from the usual company-eats-company rumours, was the continuing progress of stereoscopy or '3D' as it is currently undersold. A stereoscopic snapshot may well be 3D (displaying length, width and height) but a stereoscopic movie is in fact 4D as it includes a timeline. John Logie Baird set the stereos...

Submitted by Dennis Lennie

Published 01 January 2009

How we lit Mick

Shine a lightLets start at the beginning with the most fundamental, basic of questions – what’s the point of lighting anything, let alone a living legend like Sir Mick Jagger? The answer is simple – because lighting is the most important part of the whole process. Not the filming. Not the fiddly edit. Not the chin-scratching pre-production. The lig...

Submitted by Dennis Lennie

Published 01 January 2009

Back in the days before microprocessors

Back in the days before microprocessors, Character Generators were members of the Graphics Department armed with sheets of Letraset and cardboard. The finished caption cards were then handed over to the stage crew who acted as "Caption Pullers". For a title caption sequence, cards were stacked in shooting order alternately into two separate piles (...

Submitted by Dennis Lennie

Published 01 November 2008

Virtual Sets

When I first started approaching people in the UK with Brainstorms Virtual Studio software I was surprised to have them shake their heads vigorously and explain that virtual studio systems were “far too expensive and too difficult to set up and run” Coupled with that was the lack of realism and who’s using them?In Spain where Brainstorm are based t...

Submitted by Dennis Lennie

Published 01 November 2008

Chyron interview with tv-bay

Chyron has moved into the online content creation space. What is driving this shift?The foundation for this new division is Chyron’s recent acquisition of AXIS Graphics, a unique web-based graphics system that has pioneered online graphics production. Chyron and AXIS bring innovation to graphics creation workflow and production - and most important...

Submitted by Dennis Lennie

Published 01 October 2008

A brief history of television graphics

Thirty years ago, television captions were routinely created by sticking white Letraset characters onto black card. Credit rolls were possible using special devices which used long strips of black material onto which the Letraset was stuck, and which were literally rolled, either by an electric motor but sometimes even by hand. There were, of cours...

Submitted by Dennis Lennie

Published 01 October 2008

Everything you ever wanted to know about TV lighting Part...

In my last article, I talked about some of the basic technical aspects that we need to think about when we start on the lighting trail. I covered light levels and intensities in relation to lens apertures before discussing colour temperature and its relevance to producing ‘nice’ pictures. Although I’d like to move on into lighting ‘proper’ there ar...

Submitted by Dennis Lennie

Published 01 October 2008