Early firmware updates were crucial in fixing the "parasitic draw" issue, ensuring that the adapter went into a true sleep mode when the camera was powered down.
If you are suffering from any of these issues, stop everything and update your . techart lm-ea9 firmware
As of Q1 2025, , but with caveats. You need firmware V4.0 or higher. The global shutter’s readout speed is so fast that the adapter’s motor cannot keep up at 120fps burst. For single-shot and 20fps, it works perfectly. Early firmware updates were crucial in fixing the
The improvement in Eye-AF reliability, the elimination of lens wobble, and the silent video performance are transformative. The LM-EA9 is already the best Leica M to Sony E autofocus adapter on the market. The right firmware makes it feel like magic. You need firmware V4
: Download and unzip the Techart firmware update software .
Enter the . This revolutionary autofocus adapter bridges the gap between the analog world of Leica M lenses and the digital speed of Sony’s full-frame E-mount cameras (A7/A9/A1 series). However, like any precision electro-mechanical device, its performance hinges on a single, crucial factor: the TechArt LM-EA9 firmware .