Techart · 3 adapters
Techart camera lens adapters
Techart is the Hong Kong third-party that pioneered the motorised-tube approach to autofocusing manual rangefinder glass — its LM-EA9 (2022) physically extends a 4.5 mm tube to drive AF on Leica M-mount lenses mounted on Sony E bodies. The TZE-01 (2022) competes directly with the Megadap ETZ21 for Sony E → Nikon Z autofocus duty at a slightly lower price point. Both adapters update over micro-USB. AF is unhurried by design — best for static or low-motion subjects, not for sports or birds-in-flight.
Every Techart adapter we track
Sorted newest first. Open any row for the full per-SKU compatibility page — what the adapter preserves (AF / IS / aperture / infinity focus), firmware history, mount-side cross-links, and sibling adapters worth comparing.
Techart's successor to the TZE-01 — Sony FE / E → Nikon Z with autofocus, improved AF acquisition speed, and a broader lens-compatibility list than the first-generation TZE-01.
firmware-updatableMechanical-AF adapter: a 4.5 mm motorised tube physically extends the flange to drive autofocus on rangefinder-era M-mount lenses (and any other mechanically-coupled MF lens).
Direct competitor to the Megadap ETZ21 — same purpose (Sony FE → Nikon Z with AF) at a slightly lower price point.
firmware-updatable
Common questions
- How does the Techart LM-EA9 actually autofocus a manual Leica M lens?
- The adapter has a built-in piezo-driven motor that physically extends the lens forward and back by up to ~4.5 mm along the optical axis. As the body's AF system identifies focus distance from the live image, the piezo motor shifts the entire lens forward (to focus closer) or back (toward infinity). The Leica M lens itself stays at its mechanical focus position; the AF is achieved by adapter movement. This works for any Leica M-mount lens — Voigtländer VM, Zeiss ZM, original Leica Summicron / Summilux — without modifying the lens.
- Is the LM-EA9 compatible with heavy or long Leica M lenses?
- Techart specifies LM-EA9 compatibility up to 750 g and focal lengths ≤ 135 mm. Above that, the piezo motor lacks the torque to reliably shift the lens — focus may be slow, hunting, or fail entirely. In practice, all standard Leica M primes (28-50 mm Summicron / Summilux / Noctilux line) sit well under both limits. The 135 mm Apo-Telyt-M sits at the boundary. Lenses heavier than 750 g (anything above the Noctilux 50 f/0.95 ASPH at 700 g) are outside spec — use a manual M-to-E ring (Voigtländer VM-E Close Focus, Novoflex MFT/LEM) and focus by hand instead.
- Should I get the Techart TZE-01 or the Megadap ETZ21 Pro for Sony FE → Nikon Z?
- Both bridge Sony FE / E AF lenses onto Nikon Z bodies (Z6 / Z7 / Z8 / Z9, etc.) with full PDAF, Eye-AF, in-lens IS, and electronic aperture preserved. ETZ21 Pro tends to win on per-lens compatibility breadth (Megadap publishes a more aggressive update cadence and has a deeper per-lens chart) and is ~$50-80 more expensive. TZE-01 is the value option and competes closely on AF speed for native Sony FE primes. For Tamron / Sigma FE lenses, ETZ21 Pro has a slight edge in compatibility coverage. If your Sony FE kit is Sony-brand-heavy, either works; for mixed third-party kits, lean ETZ21 Pro.
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