Here is also a comparison between 3m Crystalline 70 and Spectra Photosync 75
Equipment used to measure
EDTM Spectrum Analyzer (this is the most accurate measuring tool that works on NFRC300 specs). This unit will break down the amount of infrared is blocked from 900-1000nm and up to 1700nm.
Photosync 75% (already installed to car in photo)
96% infrared radiation rejection at 900-1000nm
94% infrared radiation rejection up to 1700nm
Crystalline 70% (pulled from box in photo)
97% infrared radiation rejection at 900-1000nm
80% infrared radiation rejection up to 1700nm
Crystalline has a pretty big performance drop off at the 1700nm range, which is the area we really feel the most during summer. Additionally Photosync is 5% lighter as well.
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