"Better HDTV Color Fidelity is a Remote Click Away - Simply compare the Grayscale on this App to the same one on your TV!"

Black and White color accuracy is the foundation of all color accuracy.
Using this application, compare the three step grayscale on your device to the same grayscale viewed on your HDTV or to a similar grayscale from a generator. Use this tool for visual verification of your calibration.

A single tap on a given shade of gray displays it full screen.

Go to www.htdesigner.eu/ISFOpticalComparator.html where you can display an HTML page with the same pattern or download appropriately sized pictures of the pattern.

Given the variety of displays available, you should run the calibration procedure before using the application, and do so periodically to ensure the best results.

Deploy approved colorimeters from the list below, and calibrate all three patterns to x = .313, y = .329. Recheck monthly.
Colorimeters that have passed testing on Retina displays to date, X-Rite i1 Pro Spectroradiometers, DataColor Spyder 4, X-Rite SpectraCal C6, Klein K10, and Photo Research and Konica Minolta Spectroradiometers.

Disclaimer: although this application has been tested on a variety of devices, we cannot guarantee the accuracy of all displays used in various devices.