Firefly S - Ultra-Compact, Lightweight, Entry Level Machine Vision Camera with Pregius Sensors

The FLIR Firefly® S provides the necessary machine vision features required by users in an ultra-compact body.

The camera is lightweight, consumes less power and has a small size, which collectively makes it perfect for integrating into portable devices. The Firefly® S offers an excellent value by integrating the advanced CMOS sensors with robust on-camera features.

Small, Light and Low Power

The FLIR Firefly® S is perfect for integrating into compact, portable and handheld devices and has a footprint of 27 x 27 x 14 mm. It consumes 2.2 W power and weighs 20 g.

Core Machine Vision Capabilities

The FLIR Firefly® S includes the necessary machine vision features, such as triggering, GPIO and partial image modes.

Exceptional Value

Users can get access to the advanced global shutter CMOS sensors at low starting costs of only USD $199.


Source: FLIR Systems

ADC 10-bit
Chroma Mono
Frame Rate 121
Lens Mount C-mount
Megapixels 0.4
Part Number FFY-U3-04S2M-C
Pixel Size 6.9
Quantum Efficiency 64 (530 nm)
Readout Method Global shutter
Resolution 750 x 540
Sensor Format 1/2.9"
Sensor Name Sony IMX297
Sensor Type CMOS
Warranty 3 years
Compliance and Certifications
Compliance CE, FCC, KCC, RoHS, REACH. The ECCN for this product is: EAR099
Machine Vision Standard USB3 Vision v1.0
Operating Humidity 20% to 80% (no condensation)
Operating Temperature 0°C to 85°C (case)
Storage Humidity 20% to 95% (no condensation)
Storage Temperature -30°C to 60°C (ambient)
Acquisition Modes Single Frame Multi Frame Continuous
Exposure Range 29.0 µs to 30.0 S
Flash Memory 24 MB non-volatile memory
Gain Range 0.0 to 48.0 dB
Image Buffer 32 MB
Image Processing Gamma, lookup table, denoise and sharpness
Partial Image Modes ROI
Serial Port 1 (over non-isolated I/O)
User Sets 2 user configuration sets for custom camera settings
Absolute Sensitivity Threshold (y) 7.49
Dynamic Range dB 68.93
Saturation Capacity (e-) 20925
Temporal Dark Noise (e-) 6.99
Auxiliary Output 3.3 V, 120 mA maximum
Dimensions [W x H x L] 27 mm x 27 mm x 14.5 mm
Interface USB 3.1 Gen 1
Mass 20 g
Non-isolated I/O Ports 4 bi-directional
Power Consumption 2.2 W
Power Requirements 5 V via USB 3.1 interface
Recommended System Configuration
CPU 3.1 GHz or equivalent CPU
Hard Drive 200 MB hard drive space
Operating System Windows or Linux (32–bit or 64–bit)
Port USB3 Port
RAM 4 GB RAM or more




  • USB 3.1 locking cable (cast metal connectors)
  • USB 3.1 locking cable

GPIO Cables

  • JST GPIO connector for Firefly S/DL and BFS-BD

Host Adapters

  • USB 3.1 host controller card

Tripod Adapters

  • Tripod adapter for Firefly


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