PHOTO: Techkon SpectroDens 4 all-in-one-color densitometer and spectrophotometer. If you work in the color industry, either you are a brand owner, merchandise designer, printing professional, paint department staff in Home Depot or Lowe’s, or just a complete color geek like me who likes words like CIE CMC color, you will likely hear the term “ΔE”, pronounced “delta-E”. Since I work in the color industry, I spend most of my time talking to all of the…