The Blog: See what
Sigma is saying.

Tag: A1 MTF
05.28.2014

First Look: Sigma 50mm F1.4 DG HSM | A

Daffodils, captured wide open at F1.4 with the new Sigma 50mm F1.4 DG HSM | A lens on a classic 5D. 1/5000 F1.4 ISO 100.

The Sigma 50mm F1.4 DG HSM | A lens is simply amazing. This standard field of view, fast-aperture, full-frame, prime lens combines outstanding sharpness, fast autofocus, in a lens that is built with a singular vision on performance.

Read more >>

02.03.2014

Geometric and Diffraction MTF Charts: A Clearer Picture for Photographers

Our technical product information has been expanded to now include both Geometric and Diffraction MTF charts for new Sigma lenses. You can take a look at the technical information about the new Sigma 18-200mm F3.5-6.3 DC OS HSM | Contemporary lens on the Sigma Global Vision website to see these graphs plotted as part of the total package of information we share to help photographers understand the performance of our lenses.

Read more >>

11.27.2013

The Sigma 18-35mm F1.8 DC HSM | Art for Videographers

Photographers and videographers have been raving about the world’s first constant aperture F1.8 zoom lens, the Sigma 18-35mm F1.8 DC HSM | Art lens since it was originally announced earlier this year, for both its groundbreaking maximum aperture, and its incredible prime-like performance, even wide open at an amazing price. It rocked the charts on DXOMark, besting top-shelf primes at comparable focal lengths, been recognized with a POP Award from PopPhoto.com, and a Gold award from DPReview, among other accolades.

Read more >>

11.02.2012

A1 MTF Testing for New Sigma Lenses

On the Sigma Global Vision site, you may read and learn about every aspect of the evolution of Sigma. In this occasional blog series, we discuss aspects of the Global Vision in greater depth.

Read more >>