For professional bi-colour lighting, the minimum acceptable CRI rating is generally considered to be 90. Anything below this threshold introduces visible colour inaccuracies that become difficult to correct in post-production. For critical work—narrative film, commercial photography, or broadcast—most professionals set their standard at 95 or above, with the gold standard at 97 or higher to ensure consistent, accurate colour rendering across the full bi-colour range.

Shooting below CRI 90 is quietly ruining your colour grading sessions

When you shoot with a light source rated below CRI 90, you are not just dealing with slightly off colours on set. You are creating a problem that compounds in the edit. Skin tones turn muddy, fabric colours shift in unexpected directions, and no amount of secondary colour grading can fully recover what the camera never captured accurately in the first place. The time you save on a cheaper fixture gets spent twice over in the grading suite—and sometimes the footage is simply not salvageable. The fix is straightforward: prioritise CRI as a buying criterion, not an afterthought. A high-CRI bi-colour light costs more upfront but removes a hidden tax from every production you shoot.

Ignoring TLCI is holding back your broadcast and video results

CRI was designed for architectural and retail lighting, not cameras. When you rely solely on CRI to evaluate a light for video work, you are using a metric that does not account for how a camera sensor actually reads and reproduces colour. TLCI (Television Lighting Consistency Index) was developed specifically for broadcast and video production, and a light that scores 90 on CRI can still perform poorly on camera if its TLCI score is low. If your footage consistently looks slightly off even with high-CRI fixtures, check the TLCI rating. For video and film work, prioritise lights that score 90 or above on TLCI—ideally closer to 100—alongside a strong CRI figure.

What is CRI and why does it matter for lighting?

CRI, or Colour Rendering Index, is a scale from 0 to 100 that measures how accurately a light source reproduces the colours of objects compared to a reference light source, such as natural daylight. A higher CRI means colours appear truer and more natural under that light. It matters for photography and film because inaccurate colour rendering creates problems that are difficult to fix after the fact.

The scale works by comparing how a light source renders a set of standardised colour samples against a reference. A score of 100 means perfect reproduction. A score of 80 means some colours will shift noticeably. For professional use, the difference between an 85 CRI fixture and a 97 CRI fixture is visible—particularly in skin tones, which are among the most colour-sensitive subjects you will ever shoot.

For bi-colour lights specifically, CRI accuracy matters at both ends of the colour-temperature range and at every point in between. A bi-colour panel that scores well at 5600K but drops off at 2700K will produce inconsistent results as you shift the colour temperature on set.

What is the minimum CRI rating acceptable for professional bi-colour lighting?

The minimum CRI rating acceptable for professional bi-colour lighting is 90, though most working professionals in film and photography treat 95 as their practical floor. Below 90, colour inaccuracies become visible enough to cause real problems on set and in post. For broadcast, commercial, and narrative work, a CRI of 97 or above is considered the professional standard.

The reason the bar sits at 90 rather than lower is that bi-colour lights mix two different LED channels to produce a range of colour temperatures. This mixing process can introduce colour inconsistencies that a single-channel light would not have. A higher base CRI helps compensate for any spectral gaps introduced during the mixing process.

It is also worth noting that CRI alone does not tell the full story for video work. A light can score 92 on CRI and still underperform on camera if its spectral output has gaps in the wavelengths to which camera sensors are most sensitive. This is why many professionals now look at both CRI and TLCI together when evaluating a bi-colour fixture. If you are unsure which specifications matter most for your specific workflow, it is worth taking the time to talk with a specialist before making a purchasing decision.

What’s the difference between CRI and TLCI in professional lighting?

CRI measures how accurately a light renders colour compared to a reference source, scored from 0 to 100. TLCI (Television Lighting Consistency Index) measures the same thing, but specifically how a camera sensor captures and reproduces colour, rather than how the human eye perceives it. For video and film work, TLCI is the more relevant metric of the two.

The key distinction is the measurement method. CRI uses a set of colour samples evaluated by a human-observer model. TLCI uses a camera-observer model, which means it accounts for the way broadcast cameras and digital cinema cameras actually respond to light. A light that scores well on CRI but poorly on TLCI may look acceptable to the eye on set but produce colour casts and inaccuracies in recorded footage.

In practice, the best professional bi-colour lights score highly on both. A fixture with a 98 CRI and a 100 TLCI—like our own Maxima fixtures—gives you confidence that what you see on set matches what your camera records, and that your footage will hold up cleanly through colour grading.

How does a low CRI rating affect your footage and photos?

A low CRI rating causes certain colours in your scene to render inaccurately—they may appear shifted, desaturated, or simply wrong. The most visible effects show up in skin tones, which can look grey or greenish, and in saturated colours like reds and yellows, which lose depth and accuracy. These problems are difficult to correct fully in post-production because the colour information was never captured accurately to begin with.

For photographers, low CRI means more time retouching skin tones and more difficulty matching colours across a shoot, especially when mixing light sources. For videographers and cinematographers, the consequences are more serious because inconsistencies appear across every frame and become more obvious in motion.

Low CRI also creates problems when colour-matching footage across different lights on the same set. If your key light and fill light have different CRI scores, the colour rendering will not match even at the same colour temperature, making it harder to achieve a consistent, polished look.

What CRI rating should you look for in a bi-colour LED panel?

For professional bi-colour LED panels, look for a CRI of 95 or above as a baseline, and aim for 97 or higher for critical work. Pair this with a TLCI score of 90 or above for video use. These thresholds ensure accurate colour rendering across the full bi-colour range, from tungsten to daylight, without introducing visible colour shifts as you adjust colour temperature.

Beyond the headline CRI number, check whether the manufacturer provides R9 values. R9 measures how accurately a light renders deep reds, which are particularly important for skin tones. A light can have a strong overall CRI score but a weak R9, which will show up in portraits and close-up work. A strong R9 value alongside a high CRI is a reliable indicator of a well-designed light source.

For professionals just starting out, it can be tempting to compromise on CRI to reduce costs. The better approach is to look for lights that offer high colour quality at a competitive price point—which is increasingly possible with well-engineered, Italian-made fixtures that prioritise colour accuracy without requiring a flagship budget. The Maxima Rapida is one such fixture, designed to deliver exceptional colour performance at a price point that suits professionals at every stage of their career.

How do you test CRI accuracy on a bi-colour LED light on set?

To test CRI accuracy on a bi-colour LED light on set, use a handheld spectrometer or colorimeter to measure the light’s spectral output at multiple colour temperatures across its range. Check both the warm and cool extremes, as well as the midpoint. Compare the readings against the manufacturer’s stated CRI and look for consistency. Visual testing with a colour reference card is a useful secondary check.

A practical on-set workflow looks like this:

  1. Set the bi-colour light to its full warm setting (typically around 2700K to 3200K) and take a spectrometer reading.
  2. Shift to the midpoint of the bi-colour range and take a second reading.
  3. Set the light to its full cool setting (typically 5600K to 6500K) and take a third reading.
  4. Compare all three readings for consistency in CRI and colour-temperature accuracy.

If you do not have a spectrometer available, a colour checker card shot under the light at each setting gives you a visual reference you can evaluate in post. Look for neutral greys that stay neutral across the range and skin tones that remain consistent as you shift colour temperature. Any visible green or magenta cast as you move through the bi-colour range signals a spectral gap in the LED channels.

How Maxima LED delivers reliable professional bi-colour lighting solutions

Colour accuracy is not a specification to check off a list—it is something you feel every time you grade footage or retouch a portrait. At Maxima LED, we build our bi-colour lights around this reality. Every fixture we make is designed, engineered, and built in Italy to the standard that professional photographers, videographers, and gaffers actually need on set.

Here is what sets our approach apart:

  • Exceptional colour accuracy: Our lights deliver a 98.6 CRI and a perfect 100 TLCI, so what you see on set is exactly what your camera captures—with no surprises in the grade.
  • Lightweight and portable design: The Maxima Rapida weighs just 1.8 kg and features an integrated, all-in-one body, making it easy to carry and quick to set up, whether you are in the studio or on location.
  • Wide bi-colour range: With control from 2600K to 6800K and 23,000 lumens of output, Rapida gives you a rich, flexible colour range that maintains its accuracy across the full spectrum.
  • Industry-standard compatibility: Profoto and Bowens compatibility means you can use the accessories you already own without adapters or compromises.

Rapida also features IP54 weather protection and direct V-Mount battery support, so cable-free operation on location is genuinely practical, not just a marketing claim. For professionals earlier in their careers and building out a kit, our fixtures offer high colour quality at a price point that does not require a major production budget to justify.

If you are ready to stop compromising on colour accuracy, Maxima LED is built for exactly the work you are doing. Explore our range and find the right fixture for your setup.

Preguntas frecuentes

Can I mix bi-colour lights with different CRI ratings on the same set?

Mixing bi-colour lights with different CRI ratings on the same set is one of the most common causes of inconsistent colour rendering across a shoot. Even if both lights are dialled to the same colour temperature, their spectral output will differ, meaning colours—especially skin tones—will render differently depending on which light is hitting the subject. If you must mix fixtures, keep the lower-CRI light as a background or practical source rather than a key or fill, and flag the difference to your colourist so they can account for it during the grade.

What is an R9 value and why should I check it alongside CRI?

R9 is a supplementary measurement that indicates how accurately a light source renders deep, saturated reds—a colour range that the standard CRI test does not weight heavily enough. A fixture can achieve a headline CRI of 95 while still having a weak R9, which will show up as flat, desaturated reds and compromised skin tones in portraits and close-up work. When evaluating any bi-colour light for professional use, always ask the manufacturer for the R9 value alongside the overall CRI score; a strong R9 (ideally above 90) alongside a high CRI is a reliable sign of a well-designed LED source.

Does colour temperature accuracy and CRI accuracy degrade over time in bi-colour LED lights?

Yes—LED output, colour temperature accuracy, and CRI can all drift gradually over the lifespan of a fixture, particularly in lower-quality lights where the warm and cool LED channels age at different rates. This means a bi-colour panel that tested well when new may produce a subtle but visible colour cast after extended use. To stay on top of this, periodically re-test your fixtures with a spectrometer or colour checker card, and compare the results against your original baseline readings; any meaningful shift is a signal that the fixture needs replacing or recalibration.

How do I know if my camera is capturing the colour inaccuracies from a low-CRI light, even if the footage looks fine on a monitor on set?

On-set monitors—especially consumer-grade field monitors without proper calibration—can mask colour inaccuracies that are clearly visible once the footage is brought into a grading suite on a calibrated display. The most reliable on-set check is to shoot a colour checker card under your lights at the start of each setup and evaluate it in post before committing to a full grade. If your neutral grey patches have a colour cast, or if saturated swatches look shifted compared to their reference values, your light source is introducing inaccuracies that your monitor was hiding.

Is a higher CRI always better, or is there a point of diminishing returns?

For most professional applications, the meaningful threshold sits between 95 and 97 CRI—above this range, the practical difference in footage quality becomes increasingly difficult to perceive without laboratory-grade measurement. That said, for critical colour work such as product photography, commercial cosmetics, or broadcast close-ups of skin, pushing to 98 or above provides a genuine safety margin, especially when footage will undergo heavy grading or be reproduced across multiple output formats. The key is to treat CRI as a floor, not a marketing number: choose the highest CRI you can access at your budget, and pair it with a strong TLCI score for video work.

What is the best way to get started with testing and improving colour accuracy in my current lighting setup?

The most practical starting point is a colour checker card and a calibrated monitor—tools that cost relatively little but immediately reveal how your current fixtures are performing. Shoot the colour checker under each of your lights at multiple colour temperatures, pull the footage into your grading software, and compare the neutral patches and saturated swatches against their reference values. This process will quickly identify which fixtures in your kit are introducing colour problems, so you can prioritise replacing or supplementing them with high-CRI, high-TLCI alternatives rather than upgrading your entire setup at once.

Does the bi-colour mixing range of a light affect its CRI consistency, and what should I look out for?

Yes—bi-colour lights that offer a wider colour temperature range (for example, 2600K to 6800K) have more potential for spectral inconsistency at the extremes of their range, because the balance between the warm and cool LED channels shifts significantly from one end to the other. A well-engineered fixture maintains consistent CRI across its full range, while a poorly designed one may score well at a single measured point but drop off noticeably at the warm or cool extreme. Always ask whether the manufacturer's stated CRI applies across the full bi-colour range or only at a single colour temperature, and if possible, test the fixture yourself at the warm end, midpoint, and cool end before committing to a purchase.

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