· VisionSelect Team · Guides · 3 min read
Industrial Camera Interfaces Compared: USB3 Vision vs GigE Vision vs Camera Link vs CoaXPress
A practical comparison of the four industrial camera interface standards — bandwidth, cable length, multi-camera behaviour and when each one is the right answer for your vision system.
The interface decision is rarely about the camera. It is about the cable run, the host PC and how many cameras share it. Here is the comparison we run on every Selection Sprint.
The four standards at a glance
| Interface | Bandwidth (per camera) | Practical cable length | Host hardware | Best for |
|---|---|---|---|---|
| USB3 Vision | ~5 Gb/s | up to ~5 m (extendable) | USB 3.0 port | Single-camera setups, labs, cost-sensitive builds |
| GigE Vision | 1–5 Gb/s | up to ~100 m | standard NIC | Multi-camera lines, plant floors, long runs |
| 10GigE Vision | 10 Gb/s | up to ~100 m | 10G NIC | High-resolution + high frame rate, single camera |
| Camera Link | ~4–8 Gb/s | up to ~10 m | frame grabber | Legacy high-speed lines, deterministic timing |
| CoaXPress | up to 12.5 Gb/s per cable | up to ~100+ m | frame grabber | Highest bandwidth, longest runs, multi-camera |
USB3 Vision: simple and fast, until it isn’t
USB3 Vision gives you ~5 Gb/s over a cable that plugs into any laptop. For a single camera on a bench, nothing is faster to deploy, and the driver story is mature.
The limits appear quickly: cable lengths beyond a few metres need active extenders or fibre, and several cameras sharing one host controller is unreliable in practice. If your station is one camera within arm’s reach of a PC, USB3 Vision is the pragmatic default.
GigE Vision: the plant-floor workhorse
GigE Vision runs over standard Ethernet, which buys three things: long cables (up to ~100 m), multi-camera setups on a switch, and PoE variants that power the camera over the same cable. Most multi-station inspection lines use GigE Vision for exactly these reasons.
Watch the bandwidth math though: a 5 MP camera at 30 fps needs roughly 1.5 Gb/s after compression-free raw transfer — fine on one port, but four such cameras on one GigE link will not keep up. Budget one dedicated port per high-rate camera, or move to 10GigE.
10GigE Vision: when one camera needs everything
A single 12 MP camera at 60 fps, or a high-resolution line scan camera streaming continuously, saturates GigE. 10GigE Vision keeps the same ecosystem and cable philosophy at ten times the bandwidth. The cost is a 10G NIC per host and careful heat management on long runs.
Camera Link and CoaXPress: the deterministic high end
Camera Link is the veteran: a dedicated, low-jitter link that legacy high-speed lines were built on. Its constraints are a frame grabber per camera and short cable runs. If you are maintaining an existing Camera Link system, staying on standard is usually cheaper than migrating.
CoaXPress is its modern successor: coax cables carry data and power, bandwidth scales per cable, and runs are long. Very high-resolution and very high-frame-rate cameras — 16K+ line scan, multi-tap area scan — typically speak CoaXPress.
How to choose: five questions
- How far is the camera from the host? Over 5 m: GigE, 10GigE or CoaXPress. Under 5 m: anything works.
- How many cameras per host? More than two: Ethernet-based (GigE/10GigE) or multi-cable CoaXPress.
- What is the sustained data rate? Compute
resolution × frame rate × bit depthand compare against the interface bandwidth, with headroom. - Do you need deterministic trigger timing? Legacy Camera Link systems already have it; modern GenICam cameras over GigE are adequate for most applications.
- What does your software stack speak? All four are GenICam-compliant — but your existing integration may already assume one standard.
The one rule that saves projects
Choose the interface from the cable, the host and the camera count — not from the brochure. Most interface regret comes from buying a camera whose interface fights the physical layout of the line.
If you want the comparison run against your actual layout and data rates, that is the first hour of a Selection Sprint — and the interface section of a Sample Verification tests real bandwidth and jitter behaviour on your host, not just the spec sheet.
