Just because a television is said to have a 10-bit panel doesn’t mean that banding artifacts totally disappear, and the condition presents one of the more noticeable and reality-shattering distractions that surface. UPDATE: The disc producers recently posted a deep dive tutorial into using the various charts and what they mean here.
We’ve been using some of the excellent tools available in a beta version of the disc for the past few months and have found things like the moving star field pattern (great for evaluating blooming and dark shadow detail, and showing off the merits of self-emissive displays against black-lit ones), a local dimming zone counter (great for determining areas with weak control spots in LED LCD TVs with full-array backlighting) and color banding (quantization) moving test patterns that we now find indispensable in testing and evaluating a 4K television’s ability to render lifelike color transitions in backgrounds like the sky or underwater. It provides one of the most comprehensive collections of test patterns and sample imagery yet available for 4K Ultra HD and HDR in a disc format.
The Spears & Munsil Hand Forged Video UHD HDR Benchmark Disc ($39.95) was developed for home theater novices and professional calibrators, alike. The good news is that the tandem has finally released their first 4K Ultra HD/HDR 4K Blu-ray version to home users.
Once achieved, press stop, and recheck the brightness, as the adjustments you have made to the contrast may have altered the brightness settings.Anyone interested in getting the proper performance out of a modern television set will be familiar with the excellent series of Hand Forged Video Bench Mark calibration discs from experts Spears & Munsil. Depending on the light conditions when the set is used, the darker the room the lower Y will be required. the bright white on the inside of the square, tick continuous and then measure and increase the contrast, so that the outer border is still visable and Y (not y) is CRT tubes, plasmas, digital rear projection, and LCD flat panels: 120cd/m2 (35 fL), and Digital front projection: 48 cd/m2 (14 fL). Select the 100% measurement mode option, place the meter on a 100% window, i.e.
Click on that button, and that will bring up the raw data module as seen below. The 'raw data' button can be found under the tools section on the side bar. Therefore using ChromaPure can aid in the set up using the 'raw data' module. You also do not want to have the set too bright so as to create eye fatique. The problem is that, with most modern displays, the contrast can be taken to the maximum without any loss of the bars or the colours clipping. This will be your maximum contrast setting you can use.ģ. If this happens, you have pushed the contrast to far, and you are clipping a colour (if it goes pink, which is the most common you are clipping red - running out of red), and thus dial back until you can visually see the tint, that occurs as you push to far. When you set the contrast (using the pattern above), you should watch to see if you notice any colour shift in the pattern, i.e parts of the white starting to turn pink. The second step is to watch for clipping. Generally we suggest using the highest setting available before 244 or lower disappear, but at minimum the 223-234 bars should always flash.Ģ. Begin turning up white-level (press right on the remote) and watch to see if any bars stop flashing as you increase white-level.
Ideally you would want to see all the numbered bars 223-253 flash on these two patterns at a low setting, but in some situations the bars numbered 235-253 may never flash. Start by setting white-level very low so you can easily see the bars flash. The first step is to use the contrast pattern (see below), and lower the contrast (after selecting the contrast bar in the picture menu, as shown above and then press left on the remote). Setting the contrast, is made up of three steps.ġ.