Accueil » Spherical charts » EXA Chart 72×122 cm

Prêt À Tourner offers the world’s first range of optical wedge charts, featuring a very high printing definition, which is still unrivaled at the moment for this type of product. They were thought and designed to provide you maximum comfort and fast performance, thanks to our numerous adjustment tools.

EXA Chart 72×122 cm

Very high printing resolution chart, designed for the calibration and the resolution of spherical lenses and 8K cameras and over.

Our EXA chart, given its dimensions, technical characteristics, numerous options, and attractive pricing, is the flagship product of the P.A.T. range. It will be ideal for the wedging of 4K/8K cameras with full-frame sensors of 30/35 mm diagonal and above, thanks to its technological lead and easy handling.


  • Weight: 4.5 kg
  • Dimensions: 72 x 122 × 1.3 cm


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    Technical characteristics

    • Printing definition: 5 printed line pairs / mm = 250 line pairs on the sensor
    • Circular targets
    • Linear targets
    • Siemens targets
    • Frame leaders (2.39, 1.85, 2.00, 1.78, 1.33)
    • Integral magnetic support
    • Aluminum frame
    • Anti-reflection coating

    Accessories included

    • Magnetic personalization
    • 2 magnetic areas for technical information
    • Magnetic optical wedge scale
    • Magnetic neutral grey
    • Magnetic grey gradations and grayscales
    • ColorChecker Classic®, positionable on the chart
    • Magnetic mirror centering aid
    • Bubble level