Optical calibration tools

The very first custom sharpness calibration charts for 8K cameras.. and more.

Prêt À Tourner


Our tools

Our savoir-faire

Charts and optical wedge accessories

Prêt À Tourner offers their customers the world’s first optical wedge chart series featuring very high printing definition - unmatched for this type of products so far - and designed to provide you with maximum comfort and fast performance, thanks to our numerous adjustment tools.

Saving time

Designed by users and for users, the P.A.T. 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 P.A.T. 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 P.A.T. charts so unique: we 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. We are the first ever to achieve such extraordinary printing quality with formats of 160cm wide.

Our clients

Camera rental companies

Rental companies

Camera rental companies


Independent users

Photographers, vidéo makers, Youtubers


Cinema technicians

Focus pullers, 1st AC, DP

Various uses

Custom solutions, whatever your need.

They trust us...

Prêt À Tourner in a nutshell

Our premises are based in La Ciotat, France, a mythical place for cinema, since it is the place it was born in 1895 with the Lumière Brother’s movie, “The arrival of a train at La Ciotat station”.

For more than 20 years, members of the Prêt À Tourner crew have been working on developing our camera department on film and audiovisual sets, as well as in the field of communication.

We have decided to combine our two savoir-faire to enhance our driving force and offer you what’s best: optical test equipment, and advertising the image of your company.

Our star products are our sharpness calibration charts, which have earned us the recognition of numerous camera and optics professionals, as well as that of other fields using this type of equipment, such as aeronautics and mapping.

The arrival of a train at La Ciotat station - Lumière Brothers - 1895

Some of our star products

Sensitive to the common welfare and to the respect of nature, Prêt À Tourner Accessories supports Reforest’Action, social enterprise whose primary mission is to raise awareness and take action for forests. This is why, thanks to you, for every chart sold, P.A.T. finances the plantation of one tree.

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