There are three requirements for outstanding lenses: fine design, precise manufacturing and inspection that ensures compliance with all specifications. Sigma lenses are born of well-thought-out design concepts and sophisticated, advanced Japanese manufacturing technology: the final clincher is our lens performance evaluation.
We used to measure lens performance using conventional sensors. However, we've now developed our own A1 proprietary MTF (modulation transfer function) measuring system using 46-megapixel Foveon direct image sensors. Even previously undetectable high-frequency details are now within the scope of our quality control inspections. The lenses in our new lines will all be checked using this new system before they are shipped.
Thanks to our new sensors, with their extremely high resolution, you can expect our high-performance lenses to be better than ever.
Our lenses meet all the requirements in terms of optical performance, operability, toughness, durability and more. By honing their basic performance for extremely high-functionality, we have given them the ability to project highly subjective values and emotions, or in other words, to convey the photographer's own artistic preferences and passion. This is part of what makes Sigma lenses so special. In our new lines, we'll go even farther in this direction, striving for perfection in our products. At Sigma, meticulous design begins with the details.