It is known that a spectrometer provides more accurate color measurements than a "generic" colorimeter does when measuring most displays.
But a spectrometer can suffer from drift and low luminance noise issues that can cause problems - specifically when measuring and calibrating near black. - In general colorimeters provide superior low luminance measurements than spectrometer.
There are some applications for home theater display/projector calibration that use spectrometer/colorimeter combination to get full range accuracy and low-light sensitivity.
For example, ChromaPure supports
the i1Pro/i1D2 combo. See also
a demo.
Why this method is not supported in any monitor profiling software? Are there drawbacks?