Posted by Dennis Plank on April 6, 2014 at 9:24 AM
Does anyone know of a tablet that you can calibrate (preferably with a pretty wide color gamut)? I wouldn't attempt to use if for serious processing. Mostly for putting a portfolio on for easy display.
To determine which tablets can be calibrated, just google the question "How to calibrate a tablet screen" or "How to calibrate an ipad tablet" then view the results. Turns out some Android devices can be easily calibrated. I personally own the 3rd generation of Apple Ipad and have no issues with the colour, although it's a touch more contrasty than I would like.
If you already own a tablet, you can verify how good the grey scale and colour is with this graphics test chart, which is similar to what is used in the television world. Carefully read the instructions for use: http://www.pacificnet.net/~johnr/bars.html
Above is what the test chart looks like - I've made the file 1024x768 pixels which will fill the screen of a standard iPad. Note that the last two black bars or boxes should not be distinguishable from one another, as the last black is what is known as "blacker than black," called the pluge in the broadcast world, which is specifically used to calibrate black levels in monitors. This was more problematic in CRT (cathode ray tube) monitors, however even LCD and LED lit monitors require proper calibration to achieve the correct colour gamut and black levels. If you do see a difference between the last two black bars, then your screen brightness is too high.
Discussion
2 repliesThanks,
If you already own a tablet, you can verify how good the grey scale and colour is with this graphics test chart, which is similar to what is used in the television world. Carefully read the instructions for use: http://www.pacificnet.net/~johnr/bars.html
Above is what the test chart looks like - I've made the file 1024x768 pixels which will fill the screen of a standard iPad. Note that the last two black bars or boxes should not be distinguishable from one another, as the last black is what is known as "blacker than black," called the pluge in the broadcast world, which is specifically used to calibrate black levels in monitors. This was more problematic in CRT (cathode ray tube) monitors, however even LCD and LED lit monitors require proper calibration to achieve the correct colour gamut and black levels. If you do see a difference between the last two black bars, then your screen brightness is too high.
FYI - there's an interesting "shootout" of new and old ipad models here: http://www.displaymate.com/iPad_ShootOut_1.htm
Hope this helps!
Frederic in Montreal.