With the arrival of large sensors with many Pixels (2K, 4K, 6k, 8K etc.), the adjustment from lens to camera plays an increasingly important role. To achieve optimal adjustment, high-quality measuring and control maps are required. Pret a Tourner is such a supplier of these high-quality adjustment cards. Founded by Stéphane Paillard, a passionate camera man, who strived for perfection during his career. Prêt à Tourner is the first company that have created and developped sharpness charts specially designed to calibrate 8K sensors and over. These cards are made of high quality material, framed by an aluminum frame. These measuring charts are mainly developed for adjustment of high resolution definition sensors in combination with high definition and anamorphic lenses. Any self-respecting video rental and production company will have such a high quality tool. This is to guarantee optimal performance for the registration of the image as an end product for their customers.