Metabones PL to Sony E-mount T CINE Speed Booster ULTRA 0.71x (MB_SPPL-E-BT1)

Optical Design and Performance

• Advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass developed by Caldwell Photographic in the USA (patent pending).
• Delivers extraordinary optical performance with improved corner sharpness, reduced distortion, and minimized vignetting.
• Magnification factor of 0.71x effectively reduces the crop factor of mirrorless cameras with DX-sized sensors and Super35 camcorders, such as Sony E-mount and Fuji X-mount cameras, from 1.5x to approximately 1.07x.
• Well corrected for use with virtually all full-frame SLR/Prime lenses regardless of exit pupil distance.

Compatibility and Usage

• Designed to attach full-frame PL Prime lenses to Sony E-mount cameras and camcorders.
• Compatible with Sony FS7 Mark II and a wide range of Sony E-mount camera bodies including A7 series (in APS-C Size Capture mode), NEX series, and PXW-FS series camcorders.
• Tripod foot is detachable and compatible with Arca Swiss, Markins, and Photo Clam ball heads.

Features

• Increases maximum aperture by 1 stop, allowing more light transmission.
• Improves Modulation Transfer Function (MTF) for enhanced image sharpness.
• Makes the attached lens 0.71x wider, effectively increasing the field of view.
• New positive-lock PL lens mount (patent pending) ensures secure lens attachment.
• Interior opening is flocked with felt material to reduce internal reflections and flare.

Limitations and Important Notes

• Designed exclusively for use with Zeiss CP.2 and CZ.2 lenses; mounting lenses not listed in the compatibility list may cause physical damage.
• Speed Booster ULTRA covers an APS-C/Super35 image circle, which is insufficient to cover a full-frame 36mm x 24mm sensor fully.
• When used on full-frame camera bodies (e.g., Sony A7 series, NEX-VG900), the camera must be set to "APS-C/Super 35mm" mode set to "Auto" or "On" to avoid vignetting.

Lens Compatibility List

ZEISS Compact Prime lenses

• CP.2 15 mm / T2.9
• CP.2 21 mm / T2.9
• CP.2 25 mm / T2.1
• CP.2 28 mm / T2.1
• CP.2 35 mm / T1.5 and T2.1
• CP.2 50 mm / T1.5 and T2.1 (multiple versions)
• CP.2 85 mm / T1.5 and T2.1
• CP.2 100 mm / T2.1
• CP.2 135 mm / T2.1

ZEISS Cinema Zoom lenses

• CZ.2 15 – 30 mm / T2.9
• CZ.2 28 – 80 mm / T2.9
• CZ.2 70 – 200 mm / T2.9

Tested Camera and Camcorder Bodies

• Sony A7S, A7R, A7 (all in APS-C Size Capture mode)
• Sony PXW-FS7 Mark II, PXW-FS7, PXW-FS5
• Sony NEX-FS700, NEX-FS100, NEX-EA50
• Sony NEX-VG900, NEX-VG30, NEX-VG20, NEX-VG10
• Sony NEX-7, NEX-6, NEX-5R, NEX-5N, NEX-5, NEX-C3, NEX-3
• Sony NEX-A6500, NEX-A6000