AVS Forum Special Member
Join Date: Jan 2013
Location: Melbourne, Australia
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Here's a preliminary critique of the SpyderX perfomance:
Accuracy: Seems OK, but I haven't done any detailed cross checking yet.
Fast: it always takes a little under 1 second per measurement.
Repeatability seems good. I get consistent black measurements (but see below for caveats about black accuracy).
Doesn't seem to have the spectral sensitivity calibration data that the Spyder 4 & 5 have, so can't be updated for new displays by distributing display spectral samples. It instead has 4 calibration matrices for General, Standard LED, Wide LED and GB LED displays.
Low light level resolution seems limited. In the Y channel it seems to be 0.013 cd/m^2 steps. Maximum light level is theoretically 870 cd/m^2, although that could be increased by reducing the integration time.
Black point stability seems fairly poor. When cold I get a Y value of -0.014, but when it warms up to 25 degrees C I get black Y value of 0.054 cd/m^2. The sensors auto zero function doesn't seem very effective in combating this.
The sensor they have chosen is struggling for light. They have a concentration lens, have set maximum gain (x64) and are almost using maximum integration time (714 msec, 716.8 is the max.), but the sensor count limits the dark resolution. This would probably be a particular problem with displays like OLED that have very low level blacks.
Cheap and cheerful.
It doesn't seem like the i1 Display Pro is at all threatened in a technical sense.
Author of ArgyllCMS and ArgyllPRO ColorMeter