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Forum: Pentax News and Rumors
06-22-2016, 05:23 AM
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NICE!
Electromagnetic Diaphragm Control Mechanism
This mechanism performs diaphragm control operations by receiving electronic signals from the camera body and shifting the aperture blades with the driving motor built into the lens. It lets the user change aperture settings more flexibly during movie recording, because it operates very quietly by minimizing the diaphragm control noise that otherwise could be recorded in movie clips. It also controls aperture more accurately to assure stable, high-precision exposure control, especially when an AF rear converter is used for shooting.*
* The HD PENTAX-DA 55-300mmED PLM WR RE lens does not accept the rear converters A1.4X-S and A2X-S.
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