# Fact Cards

## Fact #1
- **Statement**: ViewPro Z40K uses a Panasonic 1/2.3" CMOS sensor with 25.9MP total pixels
- **Source**: Source #1, #2
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #2
- **Statement**: ViewPro Z40K records 4K (3840×2160) at 25/30fps with 8.29MP effective recording pixels; FHD (1080P) at 50/60fps with 6.10MP effective recording pixels
- **Source**: Source #1, #5
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #3
- **Statement**: ViewPro Z40K provides 20x optical zoom; 25x iA (intelligent) zoom in 4K mode; 40x iA zoom in FHD mode. iA zoom beyond 20x is a digital crop, not true optical.
- **Source**: Source #1, #2, #5
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #4
- **Statement**: ViewPro Z40K has 3-axis gimbal with ±0.02° vibration angle accuracy on pitch/roll, ±0.03° on yaw, plus 5-axis Optical Image Stabilization (OIS)
- **Source**: Source #1, #5, #16
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #5
- **Statement**: ViewPro Z40K lens is F1.8 (wide) to F3.6 (tele); horizontal FOV 62.95° (wide) to 3.45° (tele)
- **Source**: Source #1, #2
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #6
- **Statement**: ViewPro Z40K weighs 595g, operates -20°C to +60°C, CNC aluminum housing
- **Source**: Source #1, #2
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #7
- **Statement**: ViewPro Z40K has 65dB dynamic range, 38dB S/N ratio, minimum illumination 0.05 lux at F1.6
- **Source**: Source #1
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #8
- **Statement**: USG-231 is a 2-axis gyro-stabilized gimbal with Full HD (1920×1080) day-view camera, 30x optical zoom, 3x digital zoom
- **Source**: Source #3, #6
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #9
- **Statement**: USG-231 uses digital video stabilization (EIS), not optical image stabilization
- **Source**: Source #3, #4
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #10
- **Statement**: USG-231 uses a CMOS sensor with 63.7° view angle; camera weighs 590g; video processing block weighs 250g (840g total system)
- **Source**: Source #3, #6
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #11
- **Statement**: USG-231 likely uses a Sony FCB-series block camera module (specs match FCB-EV9500L: 30x zoom, Full HD, 63.7° FOV, 1/2.8" or 1/1.8" STARVIS CMOS)
- **Source**: Source #17, #18 (Sony specs matching USG-231 specs from Source #3)
- **Phase**: Phase 2
- **Confidence**: ⚠️ Medium (not officially confirmed by Ukrspecsystems, but spec match is very close)

## Fact #12
- **Statement**: 2-axis gimbals stabilize pitch and roll only; yaw movement is NOT compensated. This causes visible horizontal jitter/wobble ("jello effect") during turns and wind gusts on fixed-wing drones.
- **Source**: Source #8, #9, #10, #14
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #13
- **Statement**: 3-axis gimbals add yaw stabilization, which greatly reduces or eliminates horizontal jello effect. Industry standard for professional drone videography.
- **Source**: Source #8, #9, #10
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #14
- **Statement**: Digital stabilization (EIS) works by cropping the frame and algorithmically shifting pixels. It reduces effective resolution, can introduce warping artifacts, and struggles with fast vibrations.
- **Source**: Source #11, #12
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #15
- **Statement**: Optical Image Stabilization (OIS) physically moves lens elements to compensate for movement. No resolution loss, no cropping, no warping artifacts. Superior for small/fast vibrations.
- **Source**: Source #11, #12
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #16
- **Statement**: The Shark M UAV uses USG-231 as its standard EO camera. The camera was used in combat over Donetsk and Defense Express noted "the quality of the camera itself, which allows to receive detailed images online and determine the coordinates of targets."
- **Source**: Source #7, #4
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #17
- **Statement**: The Shark UAV demonstrated auto-tracking from 800m distance with quality footage. The system tracks both contrasting and complex objects.
- **Source**: Source #7, #22
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #18
- **Statement**: At 30x optical zoom, atmospheric distortion (heat haze, mirage) becomes visible in drone footage, creating slight jitteriness. This is a physics limitation affecting all cameras equally.
- **Source**: Source #19 (Z30 review showing same effect)
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #19
- **Statement**: The DJI Zenmuse Z30 (comparable 30x zoom, 1/2.8" sensor, 2.13MP) demonstrates that at max optical zoom, even with excellent stabilization, image quality is sufficient for inspection but shows "slight loss of quality" with digital zoom.
- **Source**: Source #19
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #20
- **Statement**: ViewPro Z40K price ranges from $2,999-$4,879 depending on variant and retailer. USG-231 price is not public but marketed as "cost-effective and affordable."
- **Source**: Source #1, #2, #3
- **Phase**: Phase 2
- **Confidence**: ✅ High (Z40K) / ⚠️ Medium (USG-231 — no public pricing)

## Fact #21
- **Statement**: The 1/2.3" sensor (Z40K) is physically larger than the 1/2.8" sensor (likely in USG-231). Larger sensors capture more light, have better low-light performance, wider dynamic range, and less noise.
- **Source**: Source #20
- **Phase**: Phase 2
- **Confidence**: ✅ High (sensor size comparison); ⚠️ Medium (USG-231 sensor size assumption)

## Fact #22
- **Statement**: USG-231 features anti-fog, weather sealing, IR filter, automatic focus control, onboard recording, IP streaming, and Pixhawk/Ardupilot compatibility (plug-and-play).
- **Source**: Source #3, #6
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #23
- **Statement**: ViewPro Z40K gimbal mechanical range: Pitch ±120°, Roll ±70°, Yaw ±300°. Supports PWM, TTL, SBUS, UDP control. Has geotagging and object tracking.
- **Source**: Source #1, #2
- **Phase**: Phase 2
- **Confidence**: ✅ High

## Fact #24
- **Statement**: Sony FCB-EV9500L (if used in USG-231) has Super Image Stabilizer built into the camera module itself, separate from the gimbal stabilization. It features STARVIS sensor with excellent low-light (0.00008 lux min illumination).
- **Source**: Source #17, #18
- **Phase**: Phase 2
- **Confidence**: ⚠️ Medium (conditional on USG-231 actually using this module)

## Fact #25
- **Statement**: For the Shark M, video and telemetry are transmitted encrypted in Full HD quality over ranges up to 180 km using Silvus Technologies StreamCaster radio.
- **Source**: Source #4
- **Phase**: Phase 2
- **Confidence**: ✅ High
