Computar P-Iris Lens Technology - Bringing out the Unique Character of IP Cameras

November 1, 2011, Commack, NY Computar ® has launched the P-Iris (Precise iris) lens series specifically developed to deliver maximum performance of Megapixel IP cameras.

The P-Iris automatically adjusts the iris setting and allows you to select best quality or best depth of field while delivering the highest sensitivity to suit your application. This innovative technology contains many exciting features and is a step up from conventional Fixed, Manual and Auto-iris lenses.

  • Precise Iris control improves image quality
  • Optimizes resolution at both center and corner of image
  • Optimizes depth of field and shutter speed
  • Available on select models of Ganz PixelPro cameras with ProSet Zoom & Focus

How P-Iris Works
P-Iris is a new type of iris control that is both automatic and precise. The main function of DC auto-iris lens is to continuously adjust the iris based on lighting conditions. The P-Iris control optimizes the image quality by enabling the best iris position to be set based on multiple factors. The precise digital iris control enables the cameras software to communicate with the lens allowing it to set the F-Stop where the lens performs optimally. At the same time, the P-Iris camera software electronically adjusts the gain (amplification of the signal level) based on the F-Stop, eliminating the need for a neutral density filter and maintaining the optimal iris position for as long as possible. The result is improved image contrast, resolution and depth of field. With the P-Iris feature you may select or prioritize the best iris mode suitable for your application. You may choose Best Quality or Best Depth of Field.

Best Quality
In normal situations, the selected iris position and a camera's electronic processing capabilities adjust the exposure based on lighting conditions. Megapixel cameras with the P-Iris technology automatically instruct the iris to move to a different position. In dark conditions, the iris will fully open. In bright conditions the P-Iris camera will limit the closing of the iris to a position that avoids diffraction or blurring. Megapixel cameras with the P-iris system are also able to minimize the difference in resolution between the center and corners of the image, enhancing overall picture quality and sharpness.

Best Depth of Field
Depth of field refers to the distance in front of and beyond the point of focus where objects appear to be sharp simultaneously. A wide iris opening reduces depth of field while a smaller opening increases it. Having good depth of field throughout the scene is essential to achieve optimized image quality. Typically, megapixel sensors have smaller pixels that can result in a result in a narrow depth of field. The P-iris added to megapixel camera will optimize the available depth of field, providing overall sharper images and enhancing foreground and background resolution. The technology is particularly useful in scenes where foreground and background resolution is critical, as in a long corridor.

Wide Range of Board and CS Mount Options
P-Iris technology is combined with ProSet Zoom & Focus on select models of Ganz PixelPro dome and bullet cameras. Computar also offers a wide range of P-iris CS mount lenses. Each P-iris CS mount lens has a special 4-pin connector on its cable. To protect the cameras from damage, P-iris connector plugs are designed not to fit regular cameras.

About Computar
Computar lenses have set the world standard through pioneering design, manufacture and global sales. Computar lenses were introduced in the USA during the mid-1970s and have continued to meet security challenges globally for more than 30 years. Today, we lead the industry in Japan, Europe, Asia and markets all over the world. Security professionals with high-security applications such as airports, banks, government buildings and commercial industries choose Computar for state of the art technology, quality and reliability. With millions of installations worldwide, there is a Computar lens for virtually every application.

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