Dahua
HAC-B4A21-VF
Bullet Camera · 2.1MP (1920×1080)
- • 102° HFOV at 12mm
- • 50 m effective range
- • 40 m IR illumination
Side-by-side comparison · within brand
Dahua HAC-B4A21-VF vs Dahua HAC-HFW1200TL
Spec-by-spec comparison of two bullet camera models, with EN 62676-4 lens math and design recommendations.
Dahua
HAC-HFW1200TL
Bullet Camera · 2.1MP (1920×1080)
- • 102° HFOV at 2.8mm
- • 50 m effective range
- • 40 m IR illumination
Specification side-by-side
| Dahua HAC-B4A21-VF | Dahua HAC-HFW1200TL | |
|---|---|---|
| Manufacturer | Dahua | Dahua |
| Form factor | Bullet Camera | Bullet Camera |
| Resolution | 2.1MP (1920×1080) | 2.1MP (1920×1080) |
| Focal length | 12mm | 2.8mm |
| Horizontal FOV | 102° | 102° |
| Effective range | 50 m | 50 m |
| IR distance | 40 m | 40 m |
| Low-light / ColorVu | Standard | Standard |
Verdict
Both cameras offer comparable specs on paper. The choice typically comes down to vendor lock-in, NDAA compliance and existing VMS integrations rather than raw imaging numbers.
Frequently asked questions
Is Dahua HAC-B4A21-VF better than Dahua HAC-HFW1200TL?
Both cameras offer comparable specs on paper. The choice typically comes down to vendor lock-in, NDAA compliance and existing VMS integrations rather than raw imaging numbers. For installation-specific advice — mounting height, tilt, obstacle shadowing, BOM and PoE budget — drop both cameras into TodAidesign and the FOV cones, DORI rings (per EN 62676-4) and cable schedule render in real time on a satellite map or imported floor plan.
What is the field of view of Dahua HAC-B4A21-VF vs Dahua HAC-HFW1200TL?
Dahua HAC-B4A21-VF has a 102° horizontal FOV at 12mm. Dahua HAC-HFW1200TL has a 102° horizontal FOV at 2.8mm. Both cover the same angular scene; the FOV calculator on TodAidesign converts these into linear meters of coverage at any chosen target distance.
Which camera has stronger IR illumination?
Dahua HAC-HFW1200TL reaches 40 m of IR illumination versus 40 m for Dahua HAC-B4A21-VF. The further-reaching IR camera is the better fit for unlit yards, parking perimeters and warehouses without permanent lighting.
Can I plan a project mixing Dahua and Dahua cameras?
Yes. TodAidesign is multi-vendor by design — drop Dahua and Dahua cameras on the same canvas, share the same EN 62676-4 lens math and DORI ring overlays, and consolidate them into one BOM with cable schedule and PoE budget. Vendor design tools (Axis Site Designer, Hikvision HiTools, Dahua Project Design Tool, i-PRO SDT) cannot do this because each speaks only its own catalog.
Continue reading
FOV Calculator →
Convert 102° vs 102° HFOV into linear coverage at any distance.
DORI Calculator →
Compute Detect / Observe / Recognize / Identify ranges per EN 62676-4.
Bandwidth Calculator →
Estimate Mbps per camera for codec, FPS, scene complexity.
Browse all cameras →
Verified in-stock camera specifications.
Test both cameras in your project
Drop Dahua HAC-B4A21-VF and Dahua HAC-HFW1200TL on a real satellite map or imported floor plan. See live FOV cones, DORI rings, BOM and cable schedule in seconds.