Has anyone tried using a colorimeter to measure roast level? Purpose built lab colorimeters are exxy to buy but I notice there are cheap or free smartphone apps that can output colorimetric values as CIE LAB, chroma, hue, RGB.
Guessing you'd need some sort of white balance calibration and standardised illumination for this to produce results you could use to compare from roast to roast
Has anyone tried this? I'll give it a burl using an app and see if it's useable. Figure it would be worthwhile to measure roast level on both whole bean and ground coffee
Guessing you'd need some sort of white balance calibration and standardised illumination for this to produce results you could use to compare from roast to roast
Has anyone tried this? I'll give it a burl using an app and see if it's useable. Figure it would be worthwhile to measure roast level on both whole bean and ground coffee

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