The sigma SD15 is the first in the SD series to offer the TRUE (Three-layer Responsive Ultimate Engine) II image-processing engine. Developed exclusively to operate in synergy with the Foveon X3® direct image sensor, TRUE II has been an extremely popular feature since it was first introduced on the Sigma DP2.
Based on Sigma’s comprehensive understanding of the image-creation mechanism of the Foveon X3® direct image sensor, TRUE II uses a proprietary algorithm to help create subtle and lifelike images. As a result, the SD15 optimizes in-camera JPEG production, dramatically enhancing image quality and processing time.
TRUE II leverages the high-quality light signal captured by the Foveon X3® direct image sensor, applying Sigma’s image-processing expertise to preserve the data under optimal conditions. It processes images quickly while maintaining their quality and emotional feel, helping to make the SD15 even more rewarding to use.