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Sigma 35mm f/1.0 for Sony A6000 (via Metabones SpeedBooster)

The Metabones SpeedBooster reduces focal length by √2 and increases lens speed by the same. So a 50mm f/1.4 becomes a 35mm f/1.0. Keeping in mind that those numbers are the same thing in format-equivalent terms.

Naturally the unusual strong performance of the Sigma 50mm f/1.4 DG HSM made me wonder what an f/1.0 could look like on the Sony A6000, an idea that seemed worth at least some play. Perhaps even on a curved wine bottle. The result* is really quite incredible. No haze or nasties are seen; the image focusing at 11.7X looks crisp and contrasty (dark edges are the lighting).

This crop sections measures 80mm in width while curving around the bottle, thus presenting quite a challenge to a lens to do more than just blur most of it. As shown, it is actual pixels from the Sony A6000 at f/1.0. Detail and micro contrast are far beyond what I would expect at the format-equivalent f/1.4 aperture from the Leica Noctilux or Summilux. For about 1/8 to 1/15 the cost. The world changes.

* Shot handheld at 1/125. All that extra mass of the Sigma 50/1.4 is a big plus when shooting handheld. One wonders why not just design a lens of the same size for APS-C with essentially the SpeedBooster built-in, rather than trying to make the lens smaller? This goofy idea that image quality should be sacrificed to keep lens size down needs to be extirpated by some vendor.

Actual Pixels
Sony A6000 + Metabones SpeedBooster + Sigma 50mm f/1.4 DG HSM A
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