The a2A4504-27g5cBAS belongs to Basler's ace 2 R high-resolution line and uses a 1.1" Sony IMX541 Pregius S global shutter CMOS sensor with 2.74 µm pixels and a 20.2 MP (4504 x 4504) resolution. It runs over a 5GigE (NBASE-T) interface at up to 27 fps with full GigE Vision 2.0 and GenICam compliance, using an RJ45 data connector and an M8 6-pin I/O connector. The compact box housing (55.5 x 29 x 29 mm, 100 g) features a C-mount, IP30 rating, and operates from 12-24 VDC at roughly 6.3 W typical. As a color model it ships with an IR cut filter and offers 8/10/12-bit pixel depth.
The Basler ace 2 a2A4504-27g5cBAS is a 20.2 MP color area scan camera built on the 1.1" Sony IMX541 Pregius S global shutter CMOS sensor, delivering a square 4504 x 4504 px frame from 2.74 um pixels. The global shutter is the decisive trait here: every pixel is exposed simultaneously, so fast-moving parts on a conveyor or rotating web are captured without the skew and smear that a rolling shutter would introduce. Combined with the high pixel count over a 12.34 x 12.34 mm active area, this camera is built for jobs where you need both spatial detail and motion fidelity at the same time. At 2.74 um, the pixels are small, so the sensor packs 20.2 MP onto a moderate 1.1" optical format, which keeps the camera compact but raises the bar on the lens you pair with it.
Connectivity runs over a 5GigE (NBASE-T) interface on a standard RJ45 connector, with full GigE Vision 2.0 and GenICam compliance. 5GigE gives roughly five times the bandwidth of classic GigE while still running over familiar copper Ethernet cabling and reaching cable lengths well beyond what USB3 allows, which is why this camera can sustain 27 fps at the full 20.2 MP resolution rather than being throttled at the link. The square frame at 27 fps is a meaningful throughput figure for high-resolution inspection: it lets you index parts quickly while still resolving fine features. A separate M8 6-pin I/O connector handles hardware trigger and strobe/flash signals, which is how you synchronize the global-shutter exposure to an encoder pulse, a part-present sensor, or a strobed light source for crisp, repeatable captures.
Physically this is a compact box-housing camera, 55.5 x 29 x 29 mm and 100 g, with a C-mount and an IP30 rating, powered from 12-24 VDC at about 6.3 W typical and rated for -10 to 50 C operation. As a color model it ships with an IR cut filter and supports 8/10/12-bit pixel depth, so you can trade off bit depth against bandwidth or push to 12-bit when grading subtle color or contrast differences matters. The C-mount and 17.5 mm sensor diagonal mean you must select a lens that both covers the 1.1" image circle and resolves the 2.74 um pixel pitch; an undersized or low-resolution lens will waste the sensor's resolving power. The IP30 housing is intended for protected enclosures rather than washdown environments.
Best for
High-resolution surface and defect inspection on electronics, semiconductor wafers, and printed media where 20.2 MP resolves fine flaws across a large field in a single frame
Dimensional measurement and gauging of parts in motion, where the global shutter prevents geometric distortion and preserves edge accuracy for metrology
Color-critical print and packaging inspection, using the IR-cut color sensor and 12-bit depth to grade subtle hue and contrast differences
OCR/OCV and 2D code reading at speed, where the square 4504 x 4504 frame and 27 fps capture full part faces with character-level detail
Multi-camera or long-cable inspection cells that benefit from 5GigE running over standard RJ45 copper well beyond USB3 cable-length limits
Selection notes
Budget for a high-resolution C-mount lens: the lens must cover the 1.1" (17.5 mm diagonal) image circle and resolve 2.74 um pixels, or the sensor's 20.2 MP will be optically wasted
Confirm your network path supports 5GigE NBASE-T end to end: you need a 5GbE-capable NIC and suitable copper Ethernet cabling to sustain 27 fps at full resolution
Plan the I/O on the M8 6-pin connector for hardware triggering and strobe output so exposures stay synchronized to an encoder, part-present sensor, or strobed lighting
Size your lighting for the small 2.74 um pixels and high frame rate; short, bright, strobed illumination synced to the global-shutter exposure freezes motion and maximizes signal
Check environmental fit: IP30 and -10 to 50 C suit protected enclosures, not washdown or harsh field use, and provide for the ~6.3 W typical dissipation and 12-24 VDC supply
Decide your pixel-depth tradeoff: 8-bit conserves bandwidth at high speed while 10/12-bit improves grayscale and color discrimination for demanding grading tasks
Specifications: General
Brand
Basler
Camera type
Area scan
Specifications: Sensor
Resolution
20.2 MP
Horizontal resolution
4504 x 4504 px
Mono / color
Color
Sensor manufacturer
Sony Pregius S
Sensor model
Sony IMX541 (IMX541-AAQJ-C)
Shutter
Global shutter
Sensor size
1.1" (12.34 x 12.34 mm, 17.5 mm diagonal)
Pixel size
2.74 x 2.74 µm
Specifications: Performance
FPS
27 fps
Specifications: Interface
Interface
5GigE (NBASE-T, RJ45)
Protocols
GigE Vision 2.0, GenICam
Specifications: Optics
Mount
C-mount
Specifications: Electrical
Power
12-24 VDC, ~6.3 W typical
Specifications: Environment
IP rating
IP30
Operating temperature
-10 to 50 °C
Specifications: Mechanical
Housing material
Box
Dimensions
55.5 x 29 x 29 mm
Weight
100 g
Applications this camera is commonly selected for. Open one to see the full recommended hardware and approach.
Matched automatically by: lens mount fits the camera mount · lens image circle covers the camera sensor — this camera: C-mount · 1.1" (12.34 x 12.34 mm, 17.5 mm diagonal) sensor.
By category
All 67C-mount lenses 43Telecentric lenses 24
By brand
All 67Basler 34iRAYPLE 23Omron / Sentech 8Datalogic / Datasensing 2
Get a first image quickly with the pylon Viewer, then move into the pylon SDK for your application. These cameras are GenICam/GenTL-compliant, so any compliant vision software can drive them as well.
Download and install the pylon Camera Software Suite for your OS from Basler. This provides the pylon Viewer, the GenTL transport-layer producers and the pylon SDK (C/C++/.NET/Python). On Windows the installer adds the needed drivers; on Linux follow the included setup notes for USB and network permissions.
2. Connect the camera and check the link
Cable the camera to its matching interface: GigE Vision to a GigE port (use a quality cable and, ideally, a dedicated NIC with jumbo frames enabled), USB3 Vision to a USB 3.x port with the supplied cable, or CoaXPress to the frame grabber. Provide power where required (PoE, USB bus power, or PoCXP). Open the pylon Viewer and confirm the camera appears in the device list; for GigE, make sure the camera and NIC are on the same subnet.
3. Grab a first image and set exposure, gain and pixel format
Select the camera in the pylon Viewer and start a continuous grab. Adjust exposure time and gain until the image is well exposed (avoid clipped highlights), set the pixel format (e.g. Mono8 or a Bayer/RGB format), and focus the lens. Use a test pattern if the lens or scene is not ready yet.
4. Configure triggering and acquisition
Decide between free-run and triggered acquisition. For synchronized capture, set the trigger source (software or a hardware line on the I/O connector), trigger mode and any debounce or exposure mode, then verify timing. Note the parameter names you change in the Viewer feature tree, as you will reuse them in code.
5. Move to the SDK or a GenICam-compliant library
Recreate your settings in code with the pylon SDK (C, C++, .NET or Python) to open the device, apply the same features and pull frames into your pipeline; pylon vTools and pylon AI can add processing blocks. Because the cameras are GenICam/GenTL standard, third-party vision libraries work too. Once the image stream is stable, you can route frames to a deep-learning inspection such as Rosepetal for automated defect detection.
Frequently asked questions
It uses the 1.1" Sony IMX541 Pregius S global shutter CMOS sensor with 2.74 um pixels, delivering 20.2 MP at 4504 x 4504 px (a square frame).
It is a global shutter, so all pixels are exposed at once. This captures fast-moving parts without skew or smear, which is essential for accurate measurement and inspection of objects in motion.
It runs on a 5GigE (NBASE-T, RJ45) interface with GigE Vision 2.0 and GenICam compliance, reaching up to 27 fps at the full 20.2 MP resolution.
It is a color model. It ships with an IR cut filter and supports 8/10/12-bit pixel depth for color and grayscale work.
It has a C-mount and runs on 12-24 VDC, drawing about 6.3 W typical. The lens must cover the 1.1" image circle (17.5 mm diagonal). Trigger and strobe I/O are on an M8 6-pin connector.
No. It carries an IP30 rating and a -10 to 50 C operating range, so it is intended for protected enclosures rather than washdown or harsh field conditions.
