Metabones has added to its line of Speed Booster adapters, providing PL support for Sony’s full-frame e-mount cameras, as well as Fuji X-Mount rigs. And thanks to some clever math and lens element magic, the Speed Booster also restores some lost optical real estate.
It’s called the Metabones PL-E T CINE Speed Booster ULTRA, and it comes with a 5-element / 4-group optical array with ultra-high index tantalum-based optical glass. The new array provides not only improve sharpness corner to corner, but also less distortion, and reduced vignetting.
But that’s not all. Designed for Super 35mm-based sensors, which for a crop factor of 1.5x for most PL mount lenses, the wider angle .71x Speed Booster effectively negates the crop factor almost entirely (1.5 x 0.71 = 1.065).
The caveat, though, is that full-frame cameras, like the α7 series, or the NEX-VG900, needs to be set for APS-C Super35 mode, for the magic to happen.
Other features should be familiar to Speed Booster acolytes including:
- Designed to adapt full-frame PL Prime Lens to Sony E-mount cameras/camcorders.
- Increases maximum aperture by 1 stop.
- Makes lens 0.71x wider, effectively negating APS-C/Super35 crop factor.
- Increases MTF (Modulation Transfer Function – in other words, “the optical performance potential of a lens”).
- The interior is flocked with felt material to reduce internal reflections that can cause unwanted flares.
- The tripod foot is detachable and compatible with Arca Swiss, Markins and Photo Clam ball heads.
Tested cameras / camcorder bodies include:
- A7S ( in “APS-C Size Capture” mode)
- A7R ( in “APS-C Size Capture” mode)
- A7 ( in “APS-C Size Capture” mode)
- PXW-FS7 MARK II
Price for the PL eMoint Metabones Speed Booster should be around the same as the other models in its class and Metabones expects to ship by week’s end.
So what do you guys think? Personally, I’m thrilled that with some fancy math and optical magic, Alpha shooters can get their optical real estate back, and still squeeze an extra stop out as well. Metabones optical engineers are gurus extraordinaire.
For more details, check out the Metabones site here.
Hat tip: Cinema 5D