A Rust FFI wrapper for the Sony Camera Remote SDK plus a browser-based tethering server with a single-page web UI. Control exposure, focus, capture, live view, and long-exposure/timelapse from any browser on your phone or PC.
This tool was developed and tested with a single body, the ILCE-7C, over USB on macOS (Apple Silicon). Other bodies are untested. Features the A7C does not expose (gyro level, Creative Look, bulb timer, AF-area device properties, etc.) remain in the code but do not work on this body. Multi-body support is a future goal.
No building required. Grab the latest release:
- Download the
.dmg, open it, and drag TetherMoon into Applications. - Launch it. First time only: right-click the app → Open → Open.
- Connect your A7C by USB and set it to PC Remote (camera: MENU → USB → USB Connection Mode → PC Remote). The console opens in your browser.
- To watch/control from a phone, open the LAN URL shown at the bottom of the page (phone must be on the same Wi-Fi).
The rest of this README is for building from source.
- Live view — MJPEG stream with focus peaking, RGB histogram, toggleable rule-of-thirds grid (rotates with the view), manual rotation
- Exposure & color — ISO, shutter, aperture, EV, white balance (+ Kelvin slider), metering, drive mode, flash mode, file format, JPEG quality, Picture Profile
- Focus — MF Near/Far slider, AF point by live-view click (Y-axis calibrated, rotation-aware), AF-area mode (Wide/Zone/Center/Flexible S·M·L/Tracking), half-shutter (S1) with focus-indication feedback
- Capture — single, burst (press-hold), movie record, cancel
- Long exposure — fixed 1″–30″, BULB, and a software bulb timer (1–900 s)
- Timelapse — software interval shooting (count × interval) with cancel
- Save — to PC with custom folder/prefix, capture preview, battery & shots-remaining
- Multi-body ready — controls are curated from each body's reported capabilities; properties a body does not expose are hidden automatically
- Multiple viewers — the live view fans out to any number of browsers (phone + desktop at once) from a single camera stream
- Robust — auto-reconnect, graceful shutdown (clean camera session release), opens your browser automatically on launch
The single-page Tether Console — live view with focus peaking and a rule-of-thirds grid on the left, all controls on the right.
| Connected | Live view (MF focus pull) |
|---|---|
 |
 |
Sony C++ SDK ──► wrapper/wrapper.{h,cpp} (pure-C shim, SCRSDK namespace bridge)
└─► build.rs (cc + bindgen) ─► src/ffi.rs
└─► safe Rust lib: session / enumerate / connection /
liveview / shutter / control / properties / callback / error
└─► crsdk_server (axum/tokio) + crsdk_server/web/index.html
All SDK calls run on spawn_blocking; the camera lives behind Arc<Mutex<…>>.
The Sony SDK is not included in this repository (see License below). Download
it yourself and place it at the project root as CrSDK_v2.01.00_20260203a_Mac/.
# Prerequisites: Rust, LLVM/Clang (brew install llvm)
export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:$(pwd)/CrSDK_v2.01.00_20260203a_Mac/RemoteCli/external/crsdk/
cargo run -p crsdk_server # → http://localhost:8080/web/index.htmlmacOS's ptpcamerad daemon interferes with USB camera access; the server suppresses
it on startup (this is expected behavior).
The Sony license permits distributing the SDK library embedded inside your
application. scripts/make_app.sh packages a self-contained macOS app bundle
(dist/TetherMoon.app) with the SDK libraries inside Contents/Frameworks/:
./scripts/make_app.shPre-built releases are attached to the Releases page. First launch:
right-click → Open, or xattr -dr com.apple.quarantine "TetherMoon.app".
Taken with this tool — ILCE-7C + FE 100-400 GM, straight out of camera.
© neko.kim.film (김괭필름)
If this project is useful to you:
Questions, bug reports, or feedback: spacedlfactory@gmail.com
The source code in this repository is MIT licensed (LICENSE).
The Sony Camera Remote SDK is NOT included and is copyright Sony. You must download it from Sony's Developer World and agree to its License Agreement. This is an independent, unofficial project, not affiliated with or endorsed by Sony.