Metabones® Introduces Hasselblad V to Fuji G mount (GFX) Speed Booster®

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Los Angeles, CA, USA, Aug 16, 2019: Caldwell Photographic Inc. and Metabones® are pleased to announce a new Speed Booster® Ultra 0.71x, exclusively designed for the exciting new Fuji GFX medium format camera. The initial version is specifically optimized for use with the famous Hasselblad V series lenses. This new Speed Booster uses an advanced 6-element design to achieve excellent optical performance at apertures up to f/1.4 when paired with the Hasselblad 110mm f/2 lens.

 

Although the Fuji GFX uses an extremely large sensor, it is nevertheless significantly smaller than the 6x6 cm film format. The new Speed Booster Ultra 0.71x is an ideal match for 6x6 Hasselblad V lenses since they can now be fully utilized as they were originally designed when mounted to the Fuji GFX. Unlike 35mm format lenses used on the Fuji GFX via glassless adapters, Hasselblad V lenses adapted to the GFX via the Speed Booster Ultra are completely free of disturbing vignetting and other corner issues.

 

In addition to increasing the field of view and lens speed, the new Speed Booster Ultra achieves superb performance by being carefully matched to the unique optical characteristics of the Hasselblad V lenses. All of the Hasselblad V lenses were analyzed for exit pupil size and location, and this was fully taken into account in the new Speed Booster Ultra for the Fuji GFX. This approach dictated the use of extremely large lens elements throughout in order to avoid vignetting and maintain high quality imagery into the corners, but the results speak for themselves.

 

Like all Metabones Speed Boosters, the Hasselblad-V to GFX Speed Booster Ultra is optimized to fully account for the camera’s filter stack located near the sensor surface. This is especially critical when using high-speed optics like the 110mm f/2, which becomes a high-performance 78mm f/1.4.

 

In addition to superb optical performance, the Hasselblad-V to GFX Speed Booster Ultra is equipped with an extremely robust cine-style positive locking mechanism to ensure that no play occurs during focusing. This is especially important when using Hasselblad V lenses for cine work because even though they provide a very smooth focus movement, they tend to require more torque than lesser lenses. The new Ultra also includes a very sturdy 360-degree rotation collar and extra length Arca Swiss style tripod mounting plate.

 

The 0.71x Speed Booster Ultra for adapting Hasselblad V lenses to the Fuji GFX will be available starting in August 16th, 2019 from the Metabones website and its worldwide dealer network for US$899, and the non-Speed Booster version will be available at the same date for US$399, plus shipping and applicable taxes and duties.

 

 

Notes:

(1) MTF data is a full diffraction-based calculation that assumes the Speed Booster is attached to a perfect master lens having an exit pupil distance of 120mm. Note that the MTF calculations do not take into account vignetting inherent in the master lens, so actual results at large apertures are likely to be better than the calculations indicate.

(2) Illumination data assumes a perfect master lens with an exit pupil distance of 120mm and zero vignetting. The slight falloff shown at f/4 is due to cos4 effects alone, as the mechanical vignetting is zero. Actual results will depend on the exit pupil distance and vignetting characteristics of the master lens used.

(3) Distortion data assumes a perfect master lens with an exit pupil distance of 120mm and zero distortion. Actual results will depend on distortion characteristics of the master lens used.

 


Figure 1: Speed Booster Ultra GFX design layout
Figure 2: MTF (1) at 20 lp/mm for f/1.4, f/2 and f/4

Figure 3: Illumination (2) at f/1.4, f/2, f/2.8 and f/4


Figure 4: Distortion (3)

 

 

Specifications:

Product name: Hasselblad V Lens to Fuji GFX (G Mount) CINE Speed Booster® ULTRA 0.71x

Model Code: MB_SPHV-FG-BM1

Color: Black Satin and Satin Chrome exterior; Black Matte interior

Magnification: 0.71x

Crop Factor for Fuji GFX format relative to 6x6 film format: 1.03x

Maximum Output Aperture: f/1.2 (with f/1.7 lens attached)

Rectilinear Distortion: < 1.0%

Lens Elements/Groups: 6/4

Length Reduction: 6.2 mm (relative to plain adapter)

Supported Cameras: Fuji GFX

Camera Mount: Fujifilm G Mount

Image Format: 43.8 mm x 32.9 mm (54.8mm diagonal)

Lens Mounts: Hasselblad V Mount

Lens Compatibility: Any Hasselblad V Mount lens. Cocking and firing of internal leaf shutters is not

supported, but lenses with this feature are fully usable by using the Fuji GFX focal plane shutter.

Special Features: Positive locking lens mount.

Tripod Mount: Arca Swiss type quick release plate with 360-degree rotation collar.

Dimensions: 100.1mm x 115.6mm x 59.9mm (incl. collar and quick release plate)

Weight: 863 grams (incl. collar and quick release plate)

Retail Price: USD 899.00

Product Page: /products/details/MB_SPHV-FG-BM1

 

 

Product name: Hasselblad V Lens to Fuji GFX (G Mount) T CINE Adapter

Model Code: MB_HV-FG-BT1

Color: Black Satin and Satin Chrome exterior; Black Matte interior

Magnification: N/A.

Supported Cameras: Fuji GFX

Camera Mount: Fujifilm G Mount

Lens Mounts: Hasselblad V Mount

Lens Compatibility: Any Hasselblad V Mount lens. Cocking and firing of internal leaf shutters is not

supported, but lenses with this feature are fully usable by using the Fuji GFX focal plane shutter.

Special Features: Positive locking lens mount. Felt material flocked Interior to reduce internal

reflection.

Tripod Mount: Arca Swiss type quick release plate with 360-degree rotation collar.

Dimensions: 100.1mm x 115.6mm x 65.7mm (incl. collar and quick release plate)

Weight: 586 grams (incl. collar and quick release plate)

Retail Price: USD 399.00

Product Page: /products/details/MB_HV-FG-BT1

*Camera, lens and ball head are not included.

 

About Metabones

Metabones®, together with its allied partners Caldwell Photographic and WB Design, is the pioneer and leader of two key technologies which have catalyzed the transition from mirror to mirrorless. Speed Booster® (winner of the 2013 TIPA Best Photo Accessory Award) makes lenses brighter, wider and sharper, and Smart Adapter™ breaks the lens mount compatibility barrier by electronically integrating interchangeable single-lens reflex (SLR) lenses and mirrorless cameras. Metabones® offers a comprehensive range of adapters covering most popular lens mounts, as well as some rare and exotic ones. "Always at the forefront of innovation without ever setting aside practicality as a professional tool" perhaps best epitomizes Metabones' philosophy.

 

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