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Ask the Experts with True Lens Services

Why should I have a lens serviced?A camera lens is not actually a sealed unit, though it may look as though it is. When you pull focus or zoom the lens, cells of glass within it start to move which results in pressure being created on one side of the cell and a partial vacuum on the other. This vacuum will suck in the surrounding air and any airbor...

Submitted by Dennis Lennie

Published 01 April 2009

How lenses are made...in Leicester!

How lenses are made...in Leicester!A tour of the factory is a wonderful insight into the production of these instruments. We start with the raw material. With over 100 types of glass to choose from Cooke select a pre moulding depending on the lens model. GrindingWe move into the main building now and are greeted by the industrial sound of machines...

Submitted by Dennis Lennie

Published 01 April 2009

A brief history of Cooke, the UK pioneer of motion pictur...

UK manufacturing has been dwindling for years now to the frustration of many with cheaper solutions in the Far East enabling more competitive products and so on. For this reason it was so refreshing to met with the owner of Cooke Optics, Les Zellan, and take a tour of a real factory, making real products from raw material to end products – the Cook...

Submitted by Dennis Lennie

Published 01 April 2009

Eye to Eye Video acquisition and production

BVE2009 in London, February 17-19 offers UK-based programme-makers a useful opportunity to try out the latest video acquisition and production equipment ahead of NABshow2009 and its loud after-echo, IBC. The following outlines some of the new front-end kit likely to be on display at Earls Court. Cameras and camcordersARRI will be exhibiting its D-2...

Submitted by Dennis Lennie

Published 01 April 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

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

IntroductionImage quality all starts with the correct alignment of the camera which is used to capture the scene either on location or in the studio. The conversion of light into electrical signals involves many processes which can affect the quality of the image. Understanding these various adjustments that are necessary, using a suitable camera c...

Submitted by Dennis Lennie

Published 01 March 2009

HD camera market

With the low cost HD market taking an ever firmer grip on the industry, we asked for Hireacamera Managing Director Guy Thatcher’s opinion on the changes taking place. So is anyone still hiring DV/DVCAM equipment anymore?Certainly in the area we specialise in, since the arrival of the Sony HVR-Z1E nearly four years ago, we have slowly watched the ma...

Submitted by Dennis Lennie

Published 01 March 2009

Mixing with the wildlife on Big Cat Live

A crew of 73 travelled out from the UK for 6 days of BBC’s ‘Big Cat Live’ programmes from Kenya early in October. Most of us were flown in on single engine cessnas which took us from Nairobi across the great Rift valley & down towards Tanzania. From the moment we touched down on the rough dirt & asphalt landing strip in the middle of the Masai Mara...

Submitted by Dennis Lennie

Published 01 March 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

Fibre Optics......the past, present and future

Although there were some discoveries in the late 19th century that were related to light and its propagation though a medium, it was not until the latter half of the 20th century when technological breakthroughs occurred which has led to modern day fibre optics. It was the development of the Fiberscope during the 1950’s, becoming the first image-tr...

Submitted by Dennis Lennie

Published 01 March 2009

How The SADiE LRX2 Is Making Location Multitrack Recordin...

Nearly twenty years ago I saw one of the first SADiE Digital Audio Workstations, which were just starting to make their mark as the first cost effective computer sound editor. I was so impressed with the concept that I immediately wanted one, even though I had no professional use for it whatsoever. Most of my work (particularly then) was in TV docu...

Submitted by Dennis Lennie

Published 01 March 2009

Surround Sound For HD Broadcast

While 2008 may not be fondly remembered as a classic year if you work in certain industries, it's a fascinating time to be working in video media production or broadcast television. The steady move to high-definition at all stages of the video production process, is causing the biggest shake-up in technology and working practices since the introduc...

Submitted by Dennis Lennie

Published 01 February 2009

Audio acquisition and production

Remembering the days when the average 'portable' sound recorder was heavy enough to induce a hernia, I have high respect for the capabilities of modern digital audio devices. Not least the solid-state recorders that have emerged as successors to the Sony-originated DAT and MiniDisk formats. But avoid anything that lacks XLR connectors unless you ar...

Submitted by Dennis Lennie

Published 01 February 2009

The Fairlight Time Machine

Just over fifty years ago, the then Soviet Union launched the first satellite into orbit around our planet. At that time the USA and USSR were in the depths of the cold war and the launch of Sputnik 1 on the 4th October 1957 was the starting gun for the space race. The winner would be the country to successfully land the first human being on the Mo...

Submitted by Dennis Lennie

Published 01 February 2009