How does digital spectrophotometry improve paint matching for classic car restorations?

02 Eki 04:45

I’ve been reading about using digital spectrophotometers to capture exact color data when matching paint on vintage vehicles. The idea is that the device measures wavelength reflectance and translates it into a formula for mixing. In theory it should reduce trial‑and‑error, but I wonder how reliable it is across different substrates and lighting conditions. Does anyone have experience with the accuracy of this method, or prefer traditional visual matching?