This is a setback for the LED movement, which thought it had cast tungsten lighting into history.

The EBU has warned that the post-production color correction costs required for video shot under LED lighting could outweigh the power savings compared with traditional tungsten lights. This is a setback for the LED movement, which thought it had cast tungsten lighting into history as a result of not just of the greatly reduced energy consumption but also other advantages, notably lower maintenance and heat production.

With LED technology, about 80 percent of the electrical energy is converted into light, compared with 20 percent or less for tungsten bulbs, which emit most of the rest as heat or infra red radiation. The issue, though, has been in matching LEDs to the well-known light profile of tungsten bulbs, which the industry had thought it had solved. In the U.K., the BBC has been experimenting with LED lighting for production for more than three decades, and has recently used it on the sets of popular shows such as the hospital drama "Casualty." The BBC says it has developed tests that assess the color rendition of low energy light sources, and has stated it wants to send a clear message to the broadcasting community and to its viewers about the leading role that LEDs play in sustainable low energy production helping meet targets for reduced carbon emissions.

There has been similar enthusiasm for studio LEDs elsewhere, and they have been used in the U.S. for filming popular prime-time reality TV competitions such as "Dancing with the Stars," "America's Got Talent" and "American Idol."

But now the EBU suggests it may be premature to embrace LEDs fully in the studio, even if they are now ready for the home. Problems that have been identified include inconsistencies between factory batches, insufficient brightness and inability to spotlight subjects, especially from a great distance. A further issue is that color LED lights are prone to color shifts and inconsistencies that can be especially evident when lighting people's faces.

The EBU is not suggesting broadcasters should avoid LEDs, but urges them to recognize that many new LED lights fail to perform as well as had been expected or promised. The EBU has come up with its own recommendation to help broadcasters assess how well their television lighting performs. Called R 137, and accompanied by a software-based analysis tool, this is designed to quantify how well a set of test colors is reproduced when illuminated under a given light and viewed through a standardized camera and TV system. The software compares the differences in colors produced by the light source under test with those rendered under standard lighting conditions. It assigns a value from 0 to 100 to each light tested, and that value gives an indication of how much color correction would be required to produce acceptable results with that light.

In addition to the value assigned to the light, the software also provides additional information that can be used to advise colorists on how much correction is needed. In cases where the value assigned to a light is less than 50, the results may still be unacceptable, even given a lot of correction.

This procedure is likely to be only required for a temporary period while the LED lighting industry continues to improve and refine its products. LED lighting will indeed be ready for prime-time production, but as so often with emerging technologies, not quite as soon as everybody hoped or manufactures led us to believe.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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2013 is here and this is my our year. Well, maybe not year, but in two months, I will be taking that walk down the aisle, looking my honey in the eye as I say:

“I Do.”

Those two words are what every little girl dreams of saying to and hearing from her Prince Charming, as she stands in front of her family and friends on one of the biggest days of her life. However, the road to the alter isn’t always one of bliss; a lot of planning goes into making the wedding day a special one, planning that can be stressful and lead to lots of headaches (but only if you let it!).

Working with the right vendors will help to alleviate that stress and make the planning process much easier. As I near the big day, I will share some of the great vendors I’ve had the pleasure of working with, who have helped make planning for my wedding an exciting event! Check back for updates as we near the big day!

Ring Engstrom Jewelers: The Bling

The CT960 universal internal grinding machine from Studer features a fully interpolating B axis and four spindles for complex grinding tasks.

The CT960 universal internal grinding machine from United Grinding features a fully interpolating B axis and four spindles for complex grinding tasks. It is suitable for machining small- to medium-sized parts including die plates, spring collets, toolholding fixtures, hydraulic components, medical components and thread ring gages in materials including tool steel, tungsten carbide, ceramic and glass.

The grinding spindle turret features a dynamic direct drive said to enable faster swiveling times. Workpieces can be completely machined in the same clamping. The swiveling time is less than 2 sec. for 90 degrees, and less than 3 sec. for 270 degrees. The angular position of the grinding spindles is infinitely variable from -5 degrees to +30 degrees in all four positions. The automatic B axis of the workhead features a swiveling range of +61 to -91 degrees. The B axis has no contact surface, and is completely closed and virtually wear-free. A coolant distributor is designed to ensure well-regulated internal conditions.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
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Tungsten rods with evaporated crystals, partially oxidized with colorful tarnish. Purity 99.98 %, as well as a high pure (99.999 % = 5N) 1 cm3 tungsten cube for comparison.

This element  tungsten, which has the chemical symbol W and the atomic number 74. The name is derived from Swedish and translates as "heavy stone", in recognition of one of this metal's more obvious qualities.

Pure tungsten is silver-coloured, very hard, and has an extremely high melting point (3422 °C / 6192 °F) -- the highest for any metal and second only to carbon (3550°C / 6422°F). Tungsten is quite rare on Earth and occurs in the wild only in a number of minerals.

By now, I suppose that you are wondering where the chemical symbol, W, came from. Although this element is known as tungsten in many English and French speaking countries, a number of European countries know it as wolfram, a word derived from German, which translates roughly as "wolf's froth" or "cream" -- a reference to the large amounts of tin consumed by tungsten extraction.