> ## Documentation Index > Fetch the complete documentation index at: https://crsdk.app/llms.txt > Use this file to discover all available pages before exploring further. # Get the AF frame position > Return the camera's current autofocus frame(s) — position, size and focus state — so a client can draw a focus box over a live view. Each frame reports its centre three ways: `normalized` (0-1, the value to use for overlays at any resolution), `position` (the same point in the coordinate space `setAFAreaPosition` expects, so a read can be written straight back), and `raw` (the camera's own numerator/denominator pair). `size.normalized_width` / `normalized_height` give the box dimensions as a fraction of the frame. **More than one frame can be returned.** An expanding area reports the main box plus its assist box — an ILCE-7M4 set to Tracking Expand Flexible Spot returns a 38x38 `contrast-flexible-main` and a 76x76 `contrast-flexible-assist`. Draw them all. `state` (`focused`, `not-focused`, `moving`, `selection`, …) is the value to drive box colour from. ## When this returns 400 The camera only reports a frame for focus areas that actually draw a box — Flexible Spot, Expand Flexible Spot, Tracking variants. In Wide or a face/eye-priority mode there is no movable frame and nothing is reported. Live view should be streaming, since this reads a live-view property. ## OpenAPI ````yaml /openapi.yaml get /api/cameras/{cameraId}/af-area-position openapi: 3.1.0 info: title: Alpha Camera REST API version: 3.0.0 description: > RESTful control for Sony cameras — shooting, settings, live view with OSD overlay, focus control, and file transfer through a clean HTTP interface. Built on the Sony Camera Remote SDK. Supports USB and network camera connections with multi-camera simultaneous operation. ## Connection Modes | Mode | Description | |------|-------------| | `remote` | Full camera control: shooting, settings, live view. Auto-transfer images to host PC. | | `remote-transfer` | Camera control + explicit SD card file access. Most capable mode. | | `contents` | SD card file access only. No shooting or settings control. | ## Quick Start 1. `GET /api/cameras` — discover cameras 2. `POST /api/cameras/{id}/connection` — connect 3. `PUT /api/cameras/{id}/priority-key` — set to `pc-remote` 4. `PUT /api/cameras/{id}/properties/{name}` — configure settings 5. `POST /api/cameras/{id}/actions/af-shutter` — shoot 6. `DELETE /api/cameras/{id}/connection` — disconnect ## Priority Key Requirement The camera's priority key **must** be set to `pc-remote` before it accepts any remote property changes or shooting commands. license: name: Proprietary contact: name: Camera Remote SDK url: https://github.com/ocjlee888/camera-remote-sdk-project servers: - url: http://{host}:{port} description: | Local camera server. The server binary runs on the host that has the camera physically connected (USB or network). Defaults to `http://localhost:8080`; override `host` and `port` when the server runs on a different machine (e.g. a Raspberry Pi next to the camera). variables: host: default: localhost description: Host running the camera server binary port: default: '8080' description: Port the camera server is listening on security: [] tags: - name: Connection description: Camera discovery, connection, and disconnection - name: Properties description: Read and write camera properties (ISO, aperture, shutter speed, etc.) - name: Actions description: Shooting commands and motor control (shutter, zoom, focus) - name: Live View description: Live view streaming and OSD overlay control - name: Events description: Server-Sent Events for real-time camera callbacks - name: SD Card description: SD card file browsing and download - name: Settings description: Save path configuration and camera settings file management - name: Server description: Server health, status, and log retrieval paths: /api/cameras/{cameraId}/af-area-position: get: tags: - Actions summary: Get the AF frame position description: > Return the camera's current autofocus frame(s) — position, size and focus state — so a client can draw a focus box over a live view. Each frame reports its centre three ways: `normalized` (0-1, the value to use for overlays at any resolution), `position` (the same point in the coordinate space `setAFAreaPosition` expects, so a read can be written straight back), and `raw` (the camera's own numerator/denominator pair). `size.normalized_width` / `normalized_height` give the box dimensions as a fraction of the frame. **More than one frame can be returned.** An expanding area reports the main box plus its assist box — an ILCE-7M4 set to Tracking Expand Flexible Spot returns a 38x38 `contrast-flexible-main` and a 76x76 `contrast-flexible-assist`. Draw them all. `state` (`focused`, `not-focused`, `moving`, `selection`, …) is the value to drive box colour from. ## When this returns 400 The camera only reports a frame for focus areas that actually draw a box — Flexible Spot, Expand Flexible Spot, Tracking variants. In Wide or a face/eye-priority mode there is no movable frame and nothing is reported. Live view should be streaming, since this reads a live-view property. operationId: getAFAreaPosition parameters: - $ref: '#/components/parameters/cameraId' responses: '200': description: AF frame(s) retrieved content: application/json: schema: $ref: '#/components/schemas/AFAreaPositionResponse' '400': description: | No AF frame available — usually a focus area with no movable box, or live view not running. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Camera not found content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: parameters: cameraId: name: cameraId in: path required: true description: Camera identifier (e.g. `D10F60149B0C`) schema: type: string schemas: AFAreaPositionResponse: type: object properties: success: type: boolean message: type: string data: type: object properties: available: type: boolean description: Whether the camera reported a focus frame at all. frame_count: type: integer frames: type: array description: | One entry per frame. Expanding and tracking areas report a main box plus an assist box — render every entry. items: $ref: '#/components/schemas/AFFrame' ErrorResponse: type: object description: | Standard non-2xx response envelope. The API does not currently expose a stable machine-readable error code in the JSON body, so clients should branch on HTTP status first and then inspect `message` for the human-readable reason. example: success: false message: Camera not connected camera: connected: false model: ILCE-7M4 id: D06CE05E3323 required: - success - message properties: success: type: boolean const: false example: false message: type: string example: Camera not connected camera: $ref: '#/components/schemas/CameraSummary' AFFrame: type: object description: A single autofocus frame as the camera reports it. properties: type: type: string description: > Frame type, e.g. `contrast-flexible-main`, `contrast-flexible-assist`, `phase-detection-image-sensor`, `wide`, `zone`, `central-emphasis`, `contrast`, `frame-somewhere`, `unknown`. state: type: string description: | `focused`, `not-focused`, `moving`, `selection`, `registration-af`, `island` or `unknown`. Drive the box colour from this. priority: type: integer normalized: type: object description: Frame centre as 0-1 fractions — use this to place an overlay. properties: x: type: number 'y': type: number position: type: object description: > The same centre in the coordinate space `setAFAreaPosition` accepts, so a value read here can be written straight back. properties: x: type: integer 'y': type: integer size: type: object description: Box dimensions, raw and as a fraction of the frame. properties: width: type: integer height: type: integer normalized_width: type: number normalized_height: type: number raw: type: object description: The camera's own numerator/denominator pair, unconverted. properties: xNumerator: type: integer xDenominator: type: integer yNumerator: type: integer yDenominator: type: integer CameraSummary: type: object description: Camera info embedded in API responses properties: connected: type: boolean example: false model: type: string example: ILCE-7M4 id: type: string example: D06CE05E3323 ````