At a glance
| Resolution | 4K |
|---|---|
| Zoom | 20x optical; Clear Image Zoom 30x (4K), 40x (HD) |
| Field of View | 70° horizontal (wide end) |
| Auto Framing | AI PTZ Auto Framing |
| Camera | 1/2.5-inch Exmor R CMOS |
| Connection | HDMI, 3G-SDI, IP |
- Model SRG-A40
- Released 2023
SonyLast updated on November 2026
Sony SRG-A40 Review
- Small room GOOD
- Large room GOOD
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On this page
Overview
Need a 4K PTZ camera with built-in auto framing for lecture halls or event spaces? The Sony SRG-A40 is a 4K PTZ camera with a 1/2.5-inch Exmor R sensor, 20x optical zoom (30x Clear Image Zoom in 4K, 40x in HD), AI-based PTZ Auto Framing, HDMI, 3G-SDI and IP outputs, NDI|HX and SRT streaming support, and PoE++ power.
- AI auto framing without an operator
- 20x optical zoom
- HDMI, SDI and IP outputs
- Runs on a single PoE++ cable
Key Takeaways
- 1/2.5-inch Exmor R sensor
- Clear Image Zoom up to 40x in HD
- Built for lecture capture
Best For
- Lecture halls
- Auditoriums
- Hybrid events
Avoid If
- You just need a huddle room camera
- You lack AV support staff
Pros & Cons
The SRG-A40 brings Sony broadcast quality and reliable AI tracking to presentation spaces. It is overkill for ordinary meeting rooms.
PROS
- AI auto framing without an operator
- 20x optical zoom
- HDMI, SDI and IP outputs
- Runs on a single PoE++ cable
CONS
- Not a USB plug-and-play webcam
- Needs AV integration
- Expensive for small rooms
Review Scores
Score Breakdown
8.6/10 Expert Score
- Optics & Room Coverage8.3/10
- AI Speaker Tracking & Framing8.5/10
- Deployment & I/O10.0/10
How this score is calculated
Each criterion is the weighted average of its available spec scores (0–10), calculated from official specifications using our Conference Cameras scoring matrix. Empty specs are skipped, not scored as 0. The Expert Score is the weighted average of the scored criteria, shown out of 10; stars = Expert Score ÷ 2 (a 9.4/10 score is 4.7 stars), to one decimal. Not scored for this product (it doesn't apply, or the published specs don't cover it): Room Audio Pickup & Output, OS Platform & Ecosystem. Its weight is shared by the other criteria.
| Criterion | Weight | From specs | Score |
|---|---|---|---|
| Optics & Room CoverageOptical Zoom: 20x → 10.0; Zoom: 20x optical → 8.6; Field of View: 70° horizontal (wide end) → 5.5; Ideal Room Size: Large rooms, auditoriums, lecture halls → 8.5; Pan / Tilt: Yes → 6.0; Max Resolution: 4K → 9.5 | 46% | 8.3 | 8.3 |
| AI Speaker Tracking & FramingAuto Framing: AI PTZ Auto Framing → 8.5 | 38% | 8.5 | 8.5 |
| Room Audio Pickup & Output | — | No built-in room audio | N/A |
| OS Platform & Ecosystem | — | required inputs missing | — |
| Deployment & I/OPower over Ethernet: PoE++ → 10.0 | 15% | 10.0 | 10.0 |
| Expert Score | 8.6/10 | ||
Scores by Use Case
- Small room60/100
- Large room60/100
Sony SRG-A40 Review
Sony has long supplied PTZ cameras to broadcast and education users. The SRG-A40 was announced at ISE 2023 alongside the SRG-A12 as its first models with PTZ Auto Framing built into the camera, at a guide price of about $5,300.
Optics & Room Coverage 8.3/10
The camera uses a 1/2.5-inch Exmor R CMOS sensor and outputs 4K video, with HD at up to 60 fps for smoother motion.
Low-light performance is solid for a PTZ with a small sensor, though auditoriums with dim stage lighting still benefit from proper lighting on the presenter. Adding a soft key light at the lectern makes a visible difference.
PTZ Auto Framing uses AI to recognise a person’s posture and face, keeping them framed as they move around the stage. Framing can be set to close-up, waist-up or full body, and recognition uses both skeleton and face detection, so it still works when a presenter wears a mask.
In lecture capture, this removes the need for a camera operator or a presenter wearing a tracking lanyard. Framing changes are smooth and paced like a human operator.
Pan reaches ±170°, and up to 256 presets can be recalled for fixed shots, so a single rear-wall position covers most stages and classrooms.
- Optical 20x
- Zoom 20x optical
- View 70° horizontal (wide end)
- Room Size Large rooms
AI Speaker Tracking & Framing 8.5/10
Optical zoom reaches 20x, and Clear Image Zoom extends that to 30x in 4K and 40x in HD while preserving more detail than ordinary digital zoom.
That range lets the camera frame a lecturer from the back of a large hall. The extended zoom is useful for close shots of a whiteboard or demonstration table.
Conference-room PTZs such as the Logitech Rally Camera offer 15x HD zoom, which is plenty for boardrooms but short of the Sony’s reach in larger spaces.
- Framing AI PTZ Auto Framing
Deployment & I/O 10.0/10
Outputs include HDMI, 3G-SDI and IP streaming. The camera can be powered over PoE++ using a single network cable.
Simultaneous outputs let one feed go to a lecture capture system while another goes to a video switcher. That flexibility is why AV integrators favour PTZ cameras like this over USB devices.
It is not a plug-and-play USB webcam, so meeting-room use needs a capture device or a room system with HDMI or IP inputs. Budget for that hardware when comparing costs.
- PoE PoE++
Full Specifications
General
| Release Year | 2023 |
|---|---|
| Launch Price | $5,300 |
| Colors | Black, White |
| Model Number | SRG-A40 |
Optics & Room Coverage 8.3/10
| Optical Zoom | 20x |
|---|---|
| Zoom | 20x optical; Clear Image Zoom 30x (4K), 40x (HD) |
| Field of View | 70° horizontal (wide end) |
| Ideal Room Size | Large rooms, auditoriums, lecture halls |
| Pan / Tilt | Yes |
| Sensor | 1/2.5-inch Exmor R CMOS |
| Sensor Size | 1/2.5-inch |
| Pan Range | ±170° |
| Best For | Lecture halls, auditoriums and hybrid event spaces |
| Camera Resolution | 4K |
| Horizontal FOV | 70° |
| Camera | 1/2.5-inch Exmor R CMOS |
AI Speaker Tracking & Framing 8.5/10
| Auto Framing | AI PTZ Auto Framing |
|---|---|
| Camera Presets | 256 |
Deployment & I/O 10.0/10
| HDMI | Yes |
|---|---|
| Power over Ethernet | PoE++ |
| Connection | HDMI, 3G-SDI, IP |
| SDI | 3G-SDI |
| NDI Support | NDI|HX |
| IP Streaming | RTSP, SRT |
| Control Protocols | VISCA over IP, web interface |
| Power | PoE++ (IEEE 802.3bt) |
| Optional Accessories | Ceiling mounting plate included |
| Video Outputs | HDMI, 3G-SDI, IP |
Product Details
| Brand | Sony |
|---|---|
| Model | SRG-A40 |
| Model number | SRG-A40 |
| Release year | 2023 |
Price Comparison
| Store | Price | Deal |
|---|---|---|
| Pro.sonyOfficial Sony store | Launch price $5,300 | View deal (opens in a new tab) |
The Verdict
Buy the Sony SRG-A40 if you are buying for higher education, houses of worship and corporate event spaces with AV staff.
Skip it if you just need a huddle room camera. For everyday meeting rooms, the Logitech Rally Camera is simpler.
The facts on this page come from Sony’s spec sheet and support pages. For the scoring criteria and weights, see How We Score.
FAQs
What sensor does the SRG-A40 use?
A 1/2.5-inch Exmor R CMOS sensor.
How much optical zoom does it have?
20x, with Clear Image Zoom up to 30x in 4K and 40x in HD.
Does it track presenters automatically?
Yes, with AI PTZ Auto Framing.
What outputs does it have?
HDMI, 3G-SDI and IP.
Does it support NDI?
Yes, NDI|HX.
Can it run on PoE?
Yes, PoE++.
Is it a USB webcam?
No, it uses HDMI, SDI or IP outputs.
