aumenta 1 stop de luz.
Aumenta 0.71x wider

esta em excelente estado e perfeitas condições

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Increase MTF.
Build-in electronics to control lens aperture.
The lens aperture is set by the controls on the camera body.
Powered by camera body. no external power source required.
High performance 32-bit processor and efficient switched-mode power supply.
The tripod foot is detachable and compatible with Arca Swiss, Markins and Photo Clam ball heads.
Support O-M10, O-M1 and O-M5