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Techart released the new firmware 4.0 for their M-mount to E-mount autofocus adapter. You can read all details at Stkb.co.jp (Google Translation here). To install the firmware use the iOS or Android APP. The new firmware has a drastic improvement in focusing speed and accuracy!
You can buy the adapter at Techart (Click here), Adorama (Click here) or on [shoplink 51403 ebay]eBay (Click here)[/shoplink].