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  • ANSI Lumens vs Color Light Output: The Debate between LCD and DLP

    You may have noticed that several projector makers now publish a controversial new specification known as Color Light Output (CLO), along with the traditional ANSI Lumen ratings (a measure of white brightness only) on their spec sheets.

    Why do we need two different ways to measure a projector's brightness?

    The test shoots carried out for this article illustrate that the ANSI lumen spec and the new Color Light Output spec can both be misleading, but for different reasons.

    The ANSI lumen spec is often misleading because it does not take either colour brightness or colour accuracy into account. Knowing that a projector is rated at, say, 3000 ANSI lumens does not tell us anything about how it will perform with full colour images.

    The picture's whites may be bright, but the colours may be dim, or poorly saturated or wildly inaccurate. The picture may have an objectionable tint. Most commercial/business class projectors (regardless of the technology used) have flaws of this nature that the ANSI lumen ratings ignore. Once you adjust the picture controls to get rid of the colour flaws, a projector can end up putting out much less light than its specs would indicate.

    The new Color Light Output spec suffers from similar limitations: it does not take colour accuracy into account, and it reveals nothing about whether the projector is calibrated to retain highlight detail. So a projector may have two specs that say "ANSI Lumens: 3000 and Color Light Output: 3000" and still end up giving you a picture you would not want to watch. Once the projector is calibrated for best picture quality, it may put out far less light than its ANSI lumen / CLO specs would indicate.

    Despite its flaws, the CLO spec does point to a real difference between three-chip projectors vs. single-chip DLP projectors. These two different technologies often do produce pictures that contain quite different amounts of colour information. When a 3LCD projector and a single-chip DLP projector with a white filter in its colour wheel have the same ANSI lumen rating, the DLP may produce noticeably dimmer full colour images. To that degree, the "white only" ANSI lumen spec can be viewed as misleading and biased in favour of single-chip DLP projectors. In theory, the CLO spec is intended to remedy this bias.

    Those who do not support the CLO spec say that its only real purpose is to point out a particular weakness in DLP technology without drawing attention to related flaws in 3LCD technology--most commonly, the unattractive blue/greenish tint you get when the 3LCD projector is in its brightest operating modes.

    And from a practical perspective, since most vendors will not publish CLO specs, they cannot be used as points of comparison in the same way that ANSI lumen numbers typically are. So in the end, detractors insist that CLO should be seen for what it is--a marketing tool used by 3LCD promoters rather than an official spec that has been accepted and embraced by the industry.

    Nevertheless, though the new CLO spec is indeed a marketing-driven venture by those who promote 3LCD technology, the fundamental point that CLO makes is valid: the traditional ANSI lumen spec utterly fails to provide buyers with an accurate apples-to-apples comparison of how bright projectors really are when they are used to display full colour images.

    Abridged version of original article by Evan Powell  ProjectorCentral.com - published with permission

    Please download the attached presentation which shows how Christie will present information for their products.

     

     

    Posted by Admin On: 26-08-2015
  • Christie D Series - BRILLIANT INSIDE AND OUT – PERFORMANCE AFFORDABILITY AND CHOICE

    The new Christie® D Series expands Christie's existing 3LCD projection family by broadening their range of resolution and brightness options, as well as offering connectivity, integration with third-party systems and a variety of lens options.

     

     

     

     

     

    With an attractively designed exterior and high-performance features, they give you choice to meet your venue’s needs. 

    When coupled with an Ultra Short Throw option (available autumn 2015), the 0.38:1 throw ratio gives you brilliant, high-resolution images to meet the tightest space requirements without requiring additional wall structure or support.

    Whether you’re outfitting a meeting room, event space, classroom or auditorium, the Christie D Series offers a collection of projectors that deliver:

    •    Affordability

    •    Expanded range of brightness – 6,000 to 8,000 lumens

    •    Wide aspect ratio

    •    Simple integration with third-party control systems

    •    Compatibility with a suite of lenses, including the new 0.38:1 ultra short throw lens (available autumn 2015)

    •    Exceptional image quality

    •    Reliability and versatility

    •    Ease of use and maintenance

     

    To book your free demonstration of this brand new projector range please call the office today.

    Posted by Admin On: 16-06-2015
  • LED displays are the latest growth market – are you ready to take your share?

    With the LED display market set for impressive growth over the next five years, this is a technology you need to understand. 

    Their long life, efficient use of power and low maintenance requirements mean these displays are fast becoming the product of choice when the image needs to be BIG, impressive and truly seamless.  And whilst outdoor is where the technology found its niche, it is now expanding into retail, corporate, education – anywhere where there is a requirement for large and imposing images.

    We’ve partnered with world leading LED specialists displayLED, who have been pioneers in this industry for the last decade.  Through this relationship we can offer you all the advice and support you may need when tendering for LED projects.

    Here’s a couple of recent projects that have used displayLED screens:-

    European Games

    Scottish Racing

    The best way to experience what LED displays can achieve is to visit The Pixel Depot – Europe’s first and largest LED showroom.  You can take a sneak preview here.

    To arrange your personal visit and demonstration, please call the office.

     

    Posted by Admin On: 16-07-2015
  • Second edition of our 2015 catalogue is out now!

    The new AVM catalogue is out now,  with many new ranges and products for the second half of the year.

     

    We’re excited about our new relationship with Toshiba.  Their full High Definition displays are easy to install for the integrator and easy to operate for the user. The comprehensive range includes models designed for video walls and 24/7 operation. 

     

    We’re also partnering with the LED company digiLED. Indoor, outdoor, fixed install or rental system, they have LED displays for all environments.

     

    Christie has two new ranges to complement their projection range, the H and D series.  Elsewhere in projection, Eiki introduces the 3 chip EIP-UJT100 and Vivitek the DU9000 at the top end of their offerings.

     

    Screens continue to be an important part of our business and a reminder that our custom screen service can provide bespoke screens of any size.   So if you have an interesting installation that demands an individual screen design, please do call Terry Lin, our screen expert, for help and advice.

     

    Finally we are working with respected electronics manufacturer SY, stocking their range of connectivity and control products.

     

    Hard copies of our catalogue are hitting desks now or you can access electronically here - please call the office for the trade password.

     

     

    Posted by Admin On: 15-07-2015