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The EXA SERIES : CALIBRATION CHARTS 72X12CM from Prêt À Tourner are very high printing resolution charts, designed for the calibration and the resolution of spherical lenses and 8K cameras and over. The EXA chart, given its dimensions, technical characteristics, numerous options, and attractive pricing, is the flagship product of the Prêt À Tourner 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.
Saving Time
Designed by users and for users, the Prêt À Tourner Accessories charts feature all the tools and aids to best fit your camera tests. Cameras that have grown increasingly sensitive and technical now shorten your tests. We have designed our charts to save you maximum time, and enhance comfort and efficiency. You don’t have to take the chart off the wall anymore, everything you need is right here.
Comfort and Aesthetics
The Prêt À Tourner charts are also sober and elegant. Each tool relies on technology, but the materials and patterns which make up our designs were thought to highlight your brand. Once imprinted on each chart, your logo enhances the image and identification of your brand. A useful, artistic chart to create Art. In the end, our main concern is the same as yours: to create beautiful images to make beautiful films.
Technological Lead
However, this is not the only thing that makes the Prêt À Tourner charts so unique: they offer you the opportunity to get an actual technological head start on your camera and lens tests. As a matter of fact, we have found a way to print the infinitesimal, so as to be able to print up to 250 line pairs per millimeter on your sensor. Prêt À Tourner are the first ever to achieve such extraordinary printing quality with formats of 160cm wide.
Which Exa Chart Is Right For Me?
Please see the "Additional Info" tab for more information on each option that is available in the Yotta series.
 | 250 Pairs of Lines / MillimeterThe unrivaled printing quality for such kind of large format offers, for the very first time, the opportunity to print up to 250 line pairs on the sensor. |
 | Circular TargetsFind circular targets with different sizes all over the chart. The numbers in the circular targets, in twentieths of a millimeter, stand for the number of line pairs printed on 1 millimeter. Numbers go from 4 up to 55. |
 | Linear TargetsFind linear targets with different sizes all over the chart. The numbers in the circular targets, in twentieths of a millimeter, stand for the number of line pairs printed on 1 millimeter. Numbers go from 4 up to 55. |
 | Siemens TargetsFind many Siemens charts all over the board to manage an easy and quick sharpness calibration. |
 | Frame LeadersNo need to take the chart off the wall to make the frame leader test. The main frame leaders are on the chart: 1.33 – 1.78 – 1.89 – 2.00 – 2.39. |
 | Magnetic SupportThe entire support of the chart is magnetized to facilitate the manipulation, using a metallic wall and even magnetic paint. This magnetic support at the back is your assurance of the immediate flatness of the chart. |
 | Aluminum FrameOur charts are fully protected by an aluminum frame. Light and rigid, it helps the manipulation during the tests and prevents bending over time. |
 | Anti-Reflection CoatingThe mat coating of the charts protects the printed ink and avoids any light reflection that could disturb the test. Most of all, you can write on it. |
General Specifications
- Dimensions (cm) : 122 x 72 x 1.3
- Dimensions (inches) : 48 x 28 x 0.5
- Weight : 4.5 kg / 9.9 lbs
- Optimum printing resolution: 5 line pairs / mm
- Circular targets : Yes
- Dimensions of the central circular target : 35 x 35 cm
- Linear targets : Yes
- Siemens targets : Yes
- Frame leaders : Yes
- Magnetic support : Yes
- Anti-bending aluminium frame : Yes
- Anti-reflective coating : Yes
- Magnetic personalization area : Yes
- Magnetic annotation areas : 3
- Magnetic neutral grey : Yes
- Magnetic grey scale and grey gradation : Yes
- Level bubble : Yes
- Mirror centering aid : Yes
- ColorChecker® : Yes
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
 | Magnetic CustomizationYou have the possibility to personalize your chart thanks to the magnetic annotation area provided for this purpose. |
 | Magnetic Annotation AreasWrite down useful and indispensable technical information on the magnetic writable and erasable annotations areas. This tool shields the entire chart against time. |
 | Magnetic Optical Wedge ScaleThe optical wedge scale enables you to evaluate and quantify the sharpness of spherical and anamorphic lenses. It gives mathematical data of the sharpness to facilitate technical exchanges between users, such as camera assistants and camera technicians |
 | Magnetic Neutral GreyAdd an 18% neutral grey using the dedicated magnetic area. |
 | Magnetic Greyscale and Grey Gradation2 cross grey scales with 21 steps and 2 cross grey gradation can also be added as magnets on the chart. |
 | ColorChecker® ClassicDigital cameras may require some color test. You have the possibility to add a ColorChecker Classic® using the Velcro® pads in the middle of the chart without removing it from the wall. |
 | Magnetic Mirror Centering AidHere is a very smart and useful aid to win time on your camera test ! The mirror is handy when it comes to placing the chart perfectly parallel to the image plane in a matter of seconds. |
 | Bubble LevelA useful level bubble is located at the top of each chart. |
EXA 4 Chart Advanced
Main Features
- Printing definition : 5 pairs of lines / printed mm = 250 pairs of lines on the sensor
- Circular targets, linear targets and Siemens targets
- Frame leaders
Support
- Anti-reflective coating
- Integral magnetic support
- Foam board 10 mm support, light and rigid
- Aluminium corner
Options Included
- Color Checker Classic ®
- Magnetic mirror centering aid
- Bubble level
- Magnetic areas : personalization with a logo, writable technical annotation areas, neutral grey, greyscale, grey gradation, optical wedge scale
- Can be personalized with your logo (option included)
EXA 4 Chart Light
Main Features
- Printing definition : 5 pairs of lines / printed mm = 250 pairs of lines on the sensor
- Circular targets, linear targets and Siemens targets
- Frame leaders
- Area dedicated to personalization with a sticker (not included)
- 2 writable technical annotation areas, neutral grey, grey scale, grey gradation, optical wedge scale
- Magnetic mirror centering aid
- Color Checker Classic ®
Support
- Anti-reflective coating
- Integral magnetic support
- Panexpan 5 mm support, light and semi-rigid
Options Included
- Personalization with your logo printed on the chart : 3 charts minimum
EXA 4 Chart Genesis
Main Features
- Printing definition : 5 pairs of lines / printed mm = 250 pairs of lines on the sensor
- Circular targets, linear targets and Siemens targets
- Frame leaders
- Area dedicated to personalization with a sticker (not included)
- 2 writable technical annotation areas, neutral grey, greyscale, grey gradation, optical wedge scale
Support
- Anti-reflective coating
- Integral self-adhesive support material
Options Included
- Personalization with your logo printed on the chart : 5 charts minimum
EXA 3 Chart Advanced
Main Features
- Printing definition : 5 pairs of lines / printed mm = 250 pairs of lines on the sensor
- Circular targets, linear targets and Siemens targets
- Frame leaders
Support
- Anti-reflective coating
- Integral magnetic support
- Foam board 10 mm support, light and rigid
- Aluminium corner
Options Included
- Color Checker Classic ®
- Magnetic mirror centering aid
- Bubble level
- Magnetic areas: personalization with a logo, writable technical annotation areas, neutral grey, greyscale, grey gradation, optical wedge scale
- Can be personalized with your logo (option included)
EXA 3 Chart Light
Main Features
- Printing definition : 5 pairs of lines / printed mm = 250 pairs of lines on the sensor
- Circular targets, linear targets and Siemens targets
- Frame leaders
- Area dedicated to personalization with a sticker (not included)
- 2 writable technical annotation areas, neutral grey, greyscale, grey gradation, optical wedge scale
- Magnetic mirror centering aid
- Color Checker Classic ®
Support
- Anti-reflective coating
- Integral magnetic support
- Panexpan 5 mm support, light and semi-rigid
Options Included
- Personalization with your logo printed on the chart : 3 charts minimum
EXA 3 Chart Genesis
Main Features
- Printing definition : 5 pairs of lines / printed mm = 250 pairs of lines on the sensor
- Circular targets, linear targets and Siemens targets
- Frame leaders
- Area dedicated to personalization with a sticker (not included)
- 2 writable technical annotation areas, neutral grey, greyscale, grey gradation, optical wedge scale
Support
- Anti-reflective coating
- Integral self-adhesive support material
Options Included
- Personalization with your logo printed on the chart : 5 charts minimum
EXA 2 Chart Advanced
Main Features
- Printing definition : 5 pairs of lines / printed mm = 250 pairs of lines on the sensor
- Circular targets, linear targets and Siemens targets
- Frame leaders
Support
- Anti-reflective coating
- Integral magnetic support
- Foam board 10 mm support, light and rigid
- Aluminium corner
Options Included
- Color Checker Classic ®
- Magnetic mirror centering aid
- Bubble level
- Magnetic areas: personalization with a logo, writable technical annotation areas, neutral grey, greyscale, grey gradation, optical wedge scale
- Can be personalized with your logo (option included)
EXA 2 Chart Light
Main Features
- Printing definition : 5 pairs of lines / printed mm = 250 pairs of lines on the sensor
- Circular targets, linear targets and Siemens targets
- Frame leaders
Support
- Anti-reflective coating
- Integral magnetic support
- Foam board 10 mm support, light and rigid
- Aluminium corner
Options Included
- Color Checker Classic ®
- Magnetic mirror centering aid
- Bubble level
- Magnetic areas: personalization with a logo, writable technical annotation areas, neutral grey, greyscale, grey gradation, optical wedge scale
- Can be personalized with your logo (option included)
EXA 2 Chart Genesis
Main Features
- Printing definition : 5 pairs of lines / printed mm = 250 pairs of lines on the sensor
- Circular targets, linear targets and Siemens targets
- Frame leaders
- Area dedicated to personalization with a sticker (not included)
- 2 writable technical annotation areas, neutral grey, greyscale, grey gradation, optical wedge scale
Support
- Anti-reflective coating
- Integral self-adhesive support material
Options Included
- Personalization with your logo printed on the chart : 5 charts minimum
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