Can Manual Focus Lenses and an Adapter Do Autofocus? According to Techart the Answer is…

by planetMitch

According to the PR from Techart, their answer is YES with their Techart PRO Autofocus adapter for Sony E mount cameras.

Watching the demo video below, I'm pretty surprised by the Techart PRO Autofocus adapter samples. Looks very impressive – but as we always say, we've got to get our hands on it to test for sure.

The demo video is impressive in the technology – moving the lens in and out to achieve focus – but I'm a bit cautious about the AF speed. They claim it is less than a second, but having used slow point and shoots or adapters on something like the Sony A7s with Canon lenses, I was disappointed with the speed. We'll have to see but concept is very intriguing. Maybe we're willing to sacrifice a little to use the vast array of older manual focus lenses? Would you?

They claim it is the “World's First” adapter to provide AF for manual lenses – I'm not an adapter expert so maybe one of you can help me figure out if that's true?

In their PR, they talk about Leica M lenses, but they also mention other types and show other brands in the video.

There's also a smartphone app to save 10 lens settings. I'm curious what that really means… do you need a smartphone to use it somehow? They don't show one in the video.

What do you think?

Techart PRO Autofocus adapter JJaFkr [bctt tweet=”Wow! Manual lenses can Autofocus! Watch This!”]

Press Release

Guangzhou China, Feb 11, 2016 – Techart, the Chinese adapter manufacturer who has previously launched the first Contax G autofocus adapter for Sony E cameras, has unveiled the world’s first Autofocus adapter for Manual Lenses named ‘Techart PRO’. The Techart PRO adapter is able to drive the manual Leica M lenses to reach focus by using the focusing system in Sony A7II and Sony A7RII, giving an unprecedented new user experience for all Leica M lenses owners.

Techart PRO has adopted the z-shift technology where the Leica M bayonet is able to extend and retract. The distance between the lens and the camera sensor is hereby changed in order to reach the focus. The mechanism is quite similar to Contax AX system where the flange distance is changed for autofocusing. Techart PRO has electronic contacts to communicate with the Sony A7II and Sony A7RII and uses its PDAF system to measure focus. The built-in motor will then drive the bayonet forward by a maximum of 4.5mm and reach the focus point for shooting.

Techart PRO is super light and powerful. The adaptor weighs only 133g and is able to drive a lens system as heavy as 700g. Apart from pairing up with the Leica M lenses, users can also further adapt lenses with longer flange distance (e.g. Leica R, CY, PK, MD, etc) with add-on adapters and enjoy the autofocusing experience with other manual lenses. Techart PRO supports both AF-S and AF-C modes and it can also serve as a close focusing adapter which can reduce the minimal focusing distance of the lenses. A complimentary mobile app will be available for users to save 10 sets of lens data to the adapter and perform firmware upgrade via bluetooth.

Techart PRO is an evolutional product which can give users a completely new experience with their manual lenses. The fast and precise focusing allows users to take quick and sharp photos with their favourite manual lenses. More product information and testing videos can now be found via our official website. (

Pricing and Availability

The Techart PRO Autofocus Leica M Adapter for Sony E cameras is currently available for pre-order at our official website ( The recommended retail price is USD 349/pc. Free shipping will be provided during the promotion period. Delivery will commence from March onwards and will be shipped from our US / UK / Hong Kong warehouse. 1-year warranty is included.

(cover photo credit: snap from the video)