A hybrid video card featuring interchangeable SFP+ interfaces for SDI via COAX or FIBER, SMPTE 2110/2022, and HDMI, KRONOS Optikos3G is the worlds most flexible video interface.
Watch how the Interchangeable Video Interface works here.

| Optikos3G | Optikos3G ST IP | |||
| Bi-Directional SDI (HD-BNC) | 2 | 2 | ||
| 1.5G HD/SD-SDI | 2 | 2 | ||
| 3G-SDI (Level A+B) | 2 | 2 | ||
| Dual Link 1.5G (4:2:2:4/4:4:4:4) |
YES | YES | ||
| Dual Link 3G (Level A+B) | YES | YES | ||
| HDR HFR | YES | YES | ||
| Interchangeable SFP+ Interfaces | 3 | 3 | ||
| Interchangeable SFP+ Modules | 0 (add up to 3)* | 3 | ||
| Module | Stream | Module | Stream | |
| ST2110-20/30/40 | 3* | 6* | 3 | 6 |
| ST2022-6/7 | 3* | 6* | 3 | 6 |
| 3G/1.5G/SD-SDI I/O (HD-BNC) | 3* | 6* | 3* | 6* |
| 3G/1.5G/SD-SDI I/O (Singlemode Fibre) | 3* | 6* | 3* | 6* |
| HD/SD HDMI 1.4a Type D (Micro-HDMI) | 3* | 3* | 3* | 3* |
| LTC In / Out | YES | YES | ||
| Reference In / SPG Out | YES | YES | ||
| Interlocking In / Out | YES | YES | ||
| Embedded audio | YES | YES | ||
| Low-latency hardware keyers | 4 | 4 | ||
| Bypass relays | 1 | 1 | ||
| Colour space converter | YES | YES | ||
| Customisable pixel formats and rasters | YES | YES | ||
| Thunderbolt-compatible | YES | YES | ||
| Full-duplex DMA | YES | YES | ||
| VBI, HANC & VANC | YES | YES | ||
| NVIDIA GPUDirect | YES | YES | ||
| AMD DirectGMA | YES | YES | ||
| Range of firmware options | YES | YES | ||
| Optional AUX IO via STEM port | YES | YES | ||
| LTC I/O (HD-BNC), RS-422 (RJ45), AES Audio I/O (DB25) | EX-1 | EX-1 | ||
| Analogue Audio I/O (2 x 3.5mm TRS), RS-422 (RJ45), AES Audio I/O (DB25) | EX-2 | EX-2 | ||
Optikos3G has four (4) low-latency hardware video keyers, allowing video layers to be combined in hardware with microseconds of delay. This feature allows animated logos, captions, tickers, etc. to be keyed over live video feeds at full 12-bit precision and with minimum input to output delay. Additional SFP+ Modules are required to utilise all Low Latency Keyers.


Building on 25+ years of Bluefish444 innovative hardware development, Optikos3G SDI jitter circuit design surpasses the industry’s minimum standard for jitter and eye pattern measurements by almost twice the permitted tolerance.

Optikos3G features a single high quality 3G/HD/SD SDI bypass relay, allowing critical on-air systems to manage system failures, power outages, and other unforeseeable circumstances that can be encountered in the world of live broadcast systems.

A 12-bit image processing pipeline is standard on Optikos 3G. This feature allows 8, 10 & 12-bit SDI video signals to be produced from 8, 10, 12 & 16-bit pixel formats providing the highest image quality available from your source material. A 12-bit image pipe means that 4096 discrete values of red, green & blue are maintained per pixel; that’s 4 times the colour precision of a traditional 10-bit processing pipeline!
Optikos3G features (2) two bi-directional 3G SDI interfaces allowing multi-channel capture or playout. HDR/SDR workflows are supported for capture and playout of multiple channels of 2K/HD High Dynamic Range content. Adding up to 3 the optional SFP+ modules enables HDR IO for UHD SDI via COAX or FIBER, SMPTE 2110/2022, and HDMI video interfaces, configure your custom video interface at the SFP+ Configurator.

Colour space conversion image processing includes a fully programmable 4 x 4 x 33-bit colour matrix providing the highest quality colour space conversions that are a standard requirement in professional video workflows. The fully programmable 4 x 4 x 33-bit colour matrix reduces colour space conversion errors and ensures the highest quality colour accuracy during capture, monitoring and mastering.

Bluefish’s integrated pseudo Sync Pulse Generator (SPG) in the Optikos3G video card provides stable and accurate synchronisation with other Professional AV equipment, including additional KRONOS or Epoch video cards, cameras, monitors or QC equipment.
The SPG output generates a Bi-level sync signal or a Pseudo Sync, Tri-level compatible sync signal.
The Optikos3G can be connected with the NVIDIA Quadro Sync card and Quadro GPU to lock the SDI and GPU display systems together via the SPG in ways that would not otherwise be achievable.


Popular PCI Express and Thunderbolt expansion chassis' are designed to be light and portable. Optikos 3G is compatible with all full-length PCIe devices from a single slot right through to much larger multi-slot devices.
For the full list of qualified 3rd-party chassis', visit Bluefish Certified Solutions page.