How to tell yellow variation apart from the look-alike
Yellow hue problems look at ΔH. Yellow light-and-dark variation looks at ΔE. You need both. Do not substitute one for the other. When you do yellow variation, follow the job ticket. Do not rely on what the shift remembers.
Yellow hue problems look at ΔH. Yellow light-and-dark variation looks at ΔE. You need both. Do not substitute one for the other. When you do yellow variation, follow the job ticket. Do not rely on what the shift remembers.
It is not the number next to it
Do not skip yellow just because it does not look obvious. If yellow is over, skin tones and the brand colour both shift. Name it wrong and the later adjustment and the count will both be wrong.
Separate check
| Item | Do this | Do not |
|---|---|---|
| Yellow variation | Yellow hue problems look at ΔH. Yellow light-and-dark variation looks at ΔE. You need both. Do not substitute one for the other. When you do yellow variation, follow the job ticket. Do not rely on what the shift remembers. | Writing only a feeling |
| The common mistake | Do not skip yellow just because it does not look obvious. If yellow is over, skin tones and the brand colour both shift. | Going along with the wrong reading |
| What to leave | The report must list yellow on its own. Do not write only that cyan, magenta and black passed. State whether it was wet or dry. | Leaving only the word pass |
Check before you name it
- Put yellow on its own line.
- State whether it was wet or dry.
- Do not judge yellow with the 4 used for cyan, magenta and black.
