Perceptual MegaPixel

The Perceptual MegaPixel (P-MP) is a proprietary ranking of lens-camera combinations, created by DxO Labs. It is intended to express the resolution of which a combination of camera and lens is capable. Complete scientific or technical documentation of the process used to compute P-MP values has never been published, and P-MP measurements have never been made without the cooperation of DxO Labs. The name of the measurement is a trade mark.

The P-MP meant for photographers to consider when comparing the sharpness of a combination of camera and lens.[1] DxO Labs claims that P-MP is a more accurate and relevant value for photographers to consider when weighing-up camera sharpness.[2][1]

As of March 2017, the "Canon EF 300mm f/2.8L IS II USM" lens mounted on a "Canon EOS 5Ds R" has the highest measured P-Mpix value in the DxO Labs lens database, a value of 44.7.[3] On the lens' summary pages this figure is rounded to an integer value of 45 P-Mpix[4]

References

"DxO Labs tries making sense of camera lens sharpness". cnet.com. 2012. Retrieved 16 January 2019.
"Perceptual Megapixel: Lens Sharpness Boiled Down to a Single Number". cnet.com. 2012. Retrieved 16 January 2019.
DxO. "Camera Lens Database | DxOMark". www.dxomark.com. Retrieved 2017-03-22.
"Canon EF 300mm f/2.8L IS II USM mounted on Canon EOS 5DS R : Tests and Reviews". cnet.com. 2012. Retrieved 16 January 2019.

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