Contrast ratio reported as 1700:1 when it could be higher, spyder5 limitation?

[Isaac Barahona]

So I did some verification charts of my new profile and I noticed that the reported contrast ratio is around 1700:1 when it could be almost twice that amount(around 3000:1). My monitor uses a VA panel with a typical contrast ratio of 3000:1( though normally the contrast ratio of VA panels is even higher than that, around 4000:1). I want to know why, is it a spyder5 limitation? Or something else?

Something odd I’ve noticed about the charts is that the spyder5 couldn’t compute the correlated color temperature at 0% and it’s reported at around 15000K.

I attached the verification charts below and the icc profile used.

Thanks.

• This topic was modified 8 years, 3 months ago by Isaac Barahona.
• This topic was modified 8 years, 3 months ago by Isaac Barahona.

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[Florian Höch]

Where does the 3000:1 contrast figure come from? If that’s manufacturer (advertised) information, I’d take it with a grain of salt, even though it’s certainly not unheard of for VA panel displays (TVs with VA panels are usually between 3000:1-5000:1 static contrast without dynamic backlight dimming).

I want to know why, is it a spyder5 limitation?

Possibly. In my own experience with a single Spyder5, when it can read the black level, it tends to be slightly too high, and fluctuates quite a bit. On the other hand, when it can’t read the black level at all, a non-zero black level may be returned as zero.

Something odd I’ve noticed about the charts is that the spyder5 couldn’t compute the correlated color temperature at 0% and it’s reported at around 15000K

Relatively normal. The black point of many LCD panel displays is exceedingly purple in hue, and far away from the blackbody or daylight locus.

[Isaac Barahona]

Thank you for your response Florian.

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