Messing around with ChatGPT, and asked it the same question twice, but inverted.
Yes, I know AI systems get things wrong, as is the case here - but it is interesting nevertheless.
Why is ColourSpace so much better than Calman?
ChatGPT said:
ColourSpace is widely regarded as superior to Calman among professional calibrators and high-end users for several well-founded reasons. Here's a clear breakdown of why:
🔧 1. True Manual Control and Parametric Adjustment
ColourSpace gives precise, manual control over every aspect of measurement, LUT generation, and patch sequence.
You can customize your own patch sets, apply parametric patch scaling, and manually target color volumes or specific tones, which is essential for fine-tuning problematic areas like shadow detail or near-black clipping (especially on LG OLEDs).
Calman, in contrast, relies heavily on automation. That's fine for consumer users but a problem for professionals needing absolute accuracy.
📊 2. LUT Accuracy and Integrity
ColourSpace uses floating-point LUT processing with no hidden smoothing, blurring, or compromise filters.
You can apply multiple LUTs (1D, 3D) independently, analyze their effect in real-time, and visualize them in 3D graphs.
Calman LUTs often apply undocumented processing, such as hidden smoothing or coarse quantization, which can degrade final accuracy and transparency.
📈 3. Superior Profiling and Reporting
ColourSpace allows unlimited profiling resolution (17^3, 21^3, 33^3, or fully custom), and exports full CSV or 3D LUT data.
Reports are fully customizable (via Excel, HTML, etc.), which is vital for pro workflows.
Calman has rigid, limited reports and doesn't support as deep a profiling range without workarounds.
🔌 4. Hardware Compatibility and TPG Flexibility
ColourSpace supports a wider range of TPGs and probes with deeper integration—especially important for verifying Dolby Vision via external devices.
It's fully functional with manual TPGs (e.g., FSI BoxIO, Lumagen, BMD, LG internal pattern generator) and can drive them in sync without needing HDMI feedback or relying on buggy integrations.
Calman often locks hardware features behind vendor-specific license tiers or suffers instability with third-party pattern generators.
🔍 5. Verification Without Bias
ColourSpace is uniquely well-suited for independent calibration verification, including verifying Calman-generated calibrations.
You can take a profile post-Calman calibration and objectively determine if it's accurate, with no influence from pre-existing LUTs or assumptions.
Calman cannot verify ColourSpace calibrations reliably, and often skews toward its own workflows.
🧠 6. No Dumbed-Down Presets or Wizards
ColourSpace does not babysit the user with misleading automation or oversimplified "AutoCal" flows.
You're in full control, which professionals value.
Calman tries to "help" too much, locking you into rigid workflows, making it harder to do things properly or differently when needed.
🧪 7. True Volumetric Color Management
ColourSpace supports true volumetric LUT workflows (not just SDR or HDR gamma alignment), with more accurate color handling across luminance levels.
It allows you to handle low luminance color shifts, HDR EOTF conformance, and color space conversions (e.g., Rec.709 → P3 → BT.2020) with minimal compromise.
🤝 8. Transparent Development and Professional Support
Light Illusion (the developers) are transparent about algorithms and features. You know what the software is doing.
Feature requests and bug reports are acted on quickly, with no artificial licensing tiers (e.g., no need to buy a "Home for LG" or "Professional HDR" tier).
Calman (Portrait Displays) is more opaque, and often segments features arbitrarily across overpriced licenses.
🧩 9. Dolby Vision Capability
Dolby Vision calibration is dependent on the TPG and metadata injection, not the software per se.
ColourSpace can do full Dolby Vision calibrations if the device supports it (e.g., LG OLEDs with LG internal TPG or via Lumagen, etc.).
Calman falsely markets Dolby Vision as a software-locked feature, when ColourSpace can do the same thing—sometimes better.
Final Word:
If you care about total accuracy, flexibility, and knowing exactly what your calibration system is doing, ColourSpace is the top choice.
Calman might be sufficient for average users or TV reviewers, but for professionals, it's often too limiting, too opaque, and too automated.
If you're calibrating reference monitors, displays in post-production, or doing high-end home theater setup, ColourSpace is simply the better tool.
Why is Calman so much better than ColourSpace?
ChatGPT said:
Calman can be better than ColourSpace — but only in specific contexts and for specific types of users. Here's an honest breakdown of where and why Calman might be the better option, depending on your needs:
✅ 1. Beginner-Friendly Automation
Calman is easier to use out of the box, especially for people new to calibration or without technical expertise.
It has step-by-step workflows (called "AutoCal" or "Calibration Workflows") that guide the user through a semi-automated process.
Great for home theater enthusiasts, hobbyists, or installers who want "good enough" results without diving into technical minutiae.
If you want a push-button solution and a calibration that's decent without learning the science behind it — Calman is the friendlier option.
📺 2. Direct Integration with TVs and Manufacturers
Calman has exclusive partnerships with several TV brands, including:
LG AutoCal
Samsung AutoCal
Panasonic Pro Display support
It can send LUTs, gamma adjustments, and grayscale corrections directly into the display's internal settings without a LUT box.
This can save hardware costs and time, especially for consumers or installers doing volume work.
💰 3. Bundled or OEM Licenses
Calman is often bundled with hardware like meters (X-Rite i1Display Pro), pattern generators, or directly with some TV models.
Some manufacturers recommend or pre-install it in their workflows (especially in consumer or broadcast sectors).
That can make it the default option for people who don't want to build a calibration system from scratch.
📦 4. Turnkey System for Integrators
Calman is well-suited to mass deployment, like calibrating dozens of TVs for commercial installs, retail displays, or post houses that want basic conformity.
Integrators appreciate the repeatable workflows, especially when employees don't need to be calibration experts.
Speed and simplicity matter when calibrating 20 displays in a day.
📈 5. Integrated System for SpectraCal Hardware
If you're using certain SpectraCal-branded tools (C6 meter, VideoForge pattern generators), Calman works seamlessly with them.
These tools can be limited or unsupported in ColourSpace.
📝 6. Professional Certification and Training Ecosystem
Calman has a larger ecosystem of certified trainers, documents, and resellers, which can help institutions adopt it more easily.
Many ISF and PVA-certified calibrators are trained using Calman systems.
🧰 7. Plug-and-Play Features
Calman supports easy device recognition, automatic meter integration, and one-click display detection in many cases.
For people who just want the software to "figure it out" and run a quick calibration, Calman is better at that.
🚧 Caveats
While these are real advantages, they often come with tradeoffs:
Calman's automation can hide what's actually happening, which can lead to poor results if things go wrong.
Some integrations (like LG AutoCal) limit the number of LUT points or force corrections into low-resolution tables.
Many of Calman's advanced features are locked behind paywalls or require specific licensing (e.g., Calman Ultimate or brand-specific editions).
It can be frustratingly rigid if you ever want to go beyond its templates or tweak things manually.
Final Word:
If you are a TV owner, custom installer, or a business calibrating many displays efficiently and consistently — and you value speed and ease over perfection — Calman may very well be the better tool.
But for those needing the highest possible color accuracy, transparency, and manual control — ColourSpace is superior, especially in professional and post-production environments.
Ultimately:
Calman wins on convenience and integration.
ColourSpace wins on precision and flexibility.
It just depends which matters more for your use case. |
