Specifications

- Product name: Metabones Contax N Lens to Sony E-mount Smart Adapter (MB-CN-E-BT1)
- Dimension: 31.4 x 72.3 x 76.0mm
- Weight: 207g
- Color: Black Satin exterior; Black Matte interior
- Electronic Features:
   - AF with Contax N mount lens (refer to the above supported lenses list for details)
   - 5-axis in-body image stabilization on A9, A7 Mark III series, A7 Mark II series and A6500.
- Optical Features:
   - Advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass by Caldwell Photographic in the USA (patent granted).
- Increase maximum aperture by 1 stop.
- Increase MTF.
- Makes lens 0.71x wider.
- Felt material flocked inside to reduce internal reflections.
- Rubber gasket protects E-mount connection from dust and moisture.
- Tripod Mount: Detachable and compatible with Arca Swiss, Markins and Photo Clam ball heads.


Description

Tested Camera Bodies:

PDAF support*
A9, A7RIII, A7III, A7RII, A7II, A6500, A6300
* Contax N lenses are not compatible with contrast-detection autofocus mirrorless cameras - no AF support for E-mount cameras other than the models listed above.

IBIS support (full 5-axis in-body image stabilization) **
A9, A7RIII, A7III, A7RII, A7II, A7SII, A6500
** Contax 645 Makro-Planar 4/120 lens does not report distance information and supports only 3-axis in-body image stabilization


Lens Compatibility Chart
When using the Contax N to E Speed Booster ULTRA on a full-frame E-Mount camera such as the A9 and the A7 series, it is required to be set to APS-C mode or Auto sensor size. The Speed Booster ULTRA is designed for APS-C format.

The following Contax N mount lenses are supported and tested:
- Vario-Sonnar T* 2,8/17-35
- Vario-Sonnar T* 3,5-4,5/24-85
- Vario-Sonnar T* 3,5-5,6/28-80
- Vario-Sonnar T* 3,5-4,5/70-200
- Vario-Sonnar T* 4-5,6/70-300
- Planar T* 1,4/50
- Planar T* 1,4/85
- Makro-Sonnar T* 2,8/100
- Apo-Teletessar T* 4/400

In addition, the following Contax 645 lenses, adapted to Contax N-mount by Contax NAM-1 adapter (not included), are supported and tested
- Vario-Sonnar T* 4,5/45-90
- Distagon T* 3,5/35
- Distagon T* 2,8/45
- Distagon T* 3,5/55
- Planar T* 2/80
- Apo-Makro-Planar T* 4/120
- Sonnar T* 2,8/140
- Sonnar T* 4/210
- Apo-Teletessar T* 4/350
- Mutar 1.4x T*