Perceptual MegaPixel

From Wikipedia, the free encyclopedia
Jump to: navigation, search

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

The P-MPix meant for photographers to consider when comparing the sharpness of a lens-camera combination.[1] DxO Labs claims that P-MPix is a more accurate and relevant value for photographers to consider when weighing-up camera sharpness.[2][3][4][5]

As of June 2014, the Carl Zeiss Apo Sonnar T* 2/135 ZF.2 lens mounted on a Nikon D800E have the highest measured P-MPix. Since Dx0 Labs only report integer values, the score of 36 P-MPix is at the theoretical maximum of the camera's 36.3 MP image sensor.[6]

References[edit]

  1. ^ http://news.cnet.com/8301-17938_105-57559599-1/dxo-labs-tries-making-sense-of-camera-lens-sharpness/ DxO Labs tries making sense of camera lens sharpness
  2. ^ http://petapixel.com/2012/12/17/perceptual-megapixel-mtf-charts-boiled-down-to-a-single-number/
  3. ^ http://photo.net/photography-news-forum/00b9IO
  4. ^ http://timgrey.com/blog/2013/dxomark-introduces-the-perceptual-megapixel/
  5. ^ http://news.cnet.com/8301-17938_105-57559599-1/dxo-labs-tries-making-sense-of-camera-lens-sharpness/
  6. ^ http://www.dxomark.com/index.php/Lenses/Camera-Lens-Ratings/Optical-Metric-Scores Camera Lens Ratings by DxOMark