Nanlite Forza 720B 800W Bi-Color Led COB Light- Lab-Test

Standalone Technical Analysis: Nanlite Forza 720B

🔍 Key Specifications

🔎 Performance Analysis

💡 Output Performance

The Forza 720B delivers extremely high light output across all colour temperatures, peaking at 21,199 Lux at 5500K. Output remains consistent across dimming levels, with 10% power producing approximately 10.2–10.5% brightness — demonstrating excellent, near-linear dimming behaviour. However, brightness varies by colour temperature, with 5500K output being about 6% higher than 6500K.

Standout Features:

• ✅ Strong 5500K output: 21,199 Lux is excellent for daylight-balanced setups
• ⚠️ CCT-based output variance: 6% difference between 5500K and 6500K may impact multi-light uniformity

🎨 Colour Performance

The light demonstrates strong colour rendering, with CRI (Ra) ranging from 96.4 to 97.4, and TM-30 Rg values of 101–104 — ensuring high saturation and accurate hues. TM-30 Rf remains consistently high at 93–95. R9 fluctuates between 91 and 97, which is solid overall but may be limiting in colour-critical daylight applications. SSI drops from 82 at 3200K to 72 at 5500K, indicating reduced spectral accuracy in daylight mode.

Standout Features:

• ✅ High-quality tungsten rendering: SSI 82 at 3200K
• ✅ Vibrant colour output: TM-30 Rg 104 at 3200K ensures excellent saturation
• ⚠️ R9 variation: 91 at 5500K may underperform in red-critical environments
• ⚠️ Limited daylight spectral fidelity: SSI 72 is functional but below high-end standards

🌡️ CCT Accuracy

CCT accuracy is excellent at 3200K (MK-1 1.55), but less precise at daylight temperatures. 5500K and 6500K both exceed the MK-1 ±9 threshold, indicating a perceptible shift that may require minor correction gels. The 5500K setting measures 5,817K, while 6500K shifts up to 6,955K — resulting in a warm tone at 5500K and a slightly cool cast at 6500K.

Standout Features:

• ✅ Excellent tungsten accuracy: MK-1 1.55 and DUV -0.0052 reflect precise white balance at 3200K
• ⚠️ 5500K just outside acceptable threshold: MK-1 9.91, with +317K deviation
• ❌ 6500K outside correction-free range: MK-1 10.06, +455K deviation — correction recommended

✅ Strengths

1. Exceptional 3200K Accuracy
   → MK-1 1.55 + SSI 82 = no correction gels required
2. High Output Capability
   → 21,199 Lux at 5500K + consistent dimming (10.2–10.5% at 10% power)
3. Stable Colour Saturation
   → TM-30 Rg ≥101 ensures vibrant colour rendering across all CCTs
4. Precision Dimming Response
   → Excellent linearity from 100% down to 10% power

⚠️ Weaknesses

1. Daylight Spectral Limitations
   → SSI 72 at 5500K falls short of high-end daylight fidelity
2. Red Rendering Variability
   → R9 91 at 5500K may limit red-intensive applications
3. CCT Inaccuracy in Daylight Modes
   → 5500K → 5817K / 6500K → 6955K — visible shifts in mixed-light environments
4. Output Fluctuation Across CCTs
   → 6% higher brightness at 5500K than 6500K can affect consistency in multi-light setups

📉 Practical Applications

• Ideal For:
  → Large-scale tungsten lighting: Film sets, interviews, stage lighting at 3200K
  → High-output daylight scenarios: Large studios, outdoor scenes
  → Precision-controlled shoots: Commercials, music videos, where dimming and colour consistency matter

• Use with Caution:
  → Spectrally sensitive daylight work: Documentaries, nature shoots at 5500K
  → Red-critical scenes: Product/fashion work under 5500K
  → Mixed-CCT lighting setups: Due to output and CCT variance

📌 Conclusion

The Nanlite Forza 720B is a high-output, professional-grade bi-colour LED with industry-leading 3200K accuracy (MK-1 1.55, SSI 82) and exceptional brightness (21,199 Lux at 5500K). It offers near-linear dimming and vibrant colour saturation across all colour temperatures. Its primary compromises lie in daylight spectral fidelity (SSI 72) and CCT accuracy at higher colour temperatures, which may require minor correction for precision-critical workflows.

Data Overview

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