These test patterns are repeated in the SDR BT.709 sub-menu, which means you can use this disc to set up a display for SDR content as well. The Contrast and Brightness patterns enable you to quickly and easily see if there is any crushing or clipping and thus establish how well your display or 4K player is tone mapping HDR content. The Colour Temp pattern is a greyscale, and the Framing pattern shows the framing marks for 1.78:1, 1.85:1, 2:00:1, 2.20:1, and 2.35:1, which is really useful for creating different lens memory settings on a projector.
However, it would have been helpful if Spears and Munsil had included a page that explains how to use each test pattern, as they did on the two previous Blu-rays. You don't need to be a professional calibrator to use these test patterns, and they should be self explanatory. This sub-menu is the one most useful to the casual user, and includes all the test patterns you need to set-up and optimise your display using the most commonly available user controls. The options are: Contrast, Brightness, Colour and Tint, Sharpness, Colour Temp, Framing, Bias Light, and Colour Space Evaluation. This sub-menu contains all the basic test patterns needed to evaluate and setup a display. For detailed instructions on how to use this disc go to the Spears & Munsil website. I should stress that the test patterns available are extensive and, as such, I’ll only be scratching the surface in terms of the capabilities of this particular Ultra HD Blu-ray.
In this review, I’ll run through the main features and test patterns on the disc and explain in simple terms what they are designed to highlight. The test patterns are all created in-house and are encoded in multiple versions using different metadata (both static and dynamic) and peak levels. The disc takes full advantage of both HDR and Wide Colour Gamut (WCG) to push displays to their limits. The third edition of their Benchmark series has been completely redesigned with Ultra HD 4K and High Dynamic Range (HDR) in mind.
The two are synonymous with test discs, video evaluation, picture quality and have already released two previous Blu-rays that enthusiasts (and reviewers) have found invaluable when it comes to correctly setting up, evaluating and optimising high definition equipment. The Spears & Munsil UHD HDR Benchmark 4K Blu-ray is the latest release from Stacey Spears and Don Munsil.
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