P-Iris is a solution that allows a network camera to perform optimally in all lighting conditions. It enables the delivery of crisp, high-resolution video with sufficient depth of field, while automatically keeping diffraction and image aberration to a minimum.

The iris of a lens regulates the size of its opening, also called aperture. This controls the amount of light that passes through, so that an image can be correctly exposed. 

But the size of the opening also affects depth of field and image sharpness.

In situations with varying light levels, typically outdoors, an automatically adjustable iris is recommended.

This is commonly a DC-iris lens. But a DC-iris lens responds only to light levels and does not take into account the impact of the iris opening on other image qualities, such as depth of field. This is a drawback that P-Iris was designed to overcome.

The P-Iris system comprises a P-Iris lens and specialized software in the camera. The software controls a motor in the P-Iris lens, enabling automatic and precise control of the iris. The primary objective of P-Iris is to improve image quality by enabling the optimal iris position to be set so that the central and best-performing part of the lens is used most of the time. This position, expressed as a specific f-number,is where the lens performs optimally, where many optical errors are reduced, and where image quality (with regards to contrast, resolution, and depth of field) is the best.

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