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Tag: A1 MTF
08.28.2015

Sigma Art Lenses for Razor Sharp Detail

A raindrop hangs from a leaf as seen through the Sigma 50mm F1.4 DG HSM | Art lens wide open at F1.4. 1/200 F1.4 ISO 400 on a Canon EOS 6D. The focal point is sharp and crisp, while the depth of field is ridiculously shallow.

Sigma Art lenses are renowned for razor-sharp detail on the focal plane, even at widest apertures.

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07.10.2015

Sigma 24-35mm F2 DG HSM | Art: Hands-On Sneak Peek

An earring hangs on a display rod at an artisan's market. 1/800 F2 ISO 100 at 35mm on a Canon EOS 6D.

The Sigma 24-35mm F2 DG HSM | Art is the world’s first full-frame zoom lens with a constant F2 maximum aperture, and its 1.45x zoom range manages to bridge three of the most popular wide angle fixed focal lengths for lenses: 24mm, 28mm and 35mm. The zoom range is subtle, but the compositional effects are noticeable as the smooth zoom ring shifts the field of view from 24mm through to 35mm.

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03.02.2015

Sigma 24mm F1.4 DG HSM | Art: First Look

Along the Brooklyn waterfront. 30 second exposure at F11 at ISO 100 on the Canon 6D by Patrick Santucci.

Patrick Santucci and I had a few days to check out the first sample of the new 24mm F1.4 DG […]

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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.

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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.

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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.

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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.

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