G7灰平衡计算工具
此工具用于计算印刷灰平衡，使用G7的计算方法.输入纸张的L*a*b*数值，点击计算.结果区第1栏为颜色的效果；第2栏为灰平衡的比例；第3,4栏为灰平衡具体色度值；第4栏为灰平衡NPDC密度值(仅提供25%,50%,75%3处)
| 灰平衡 | 比例 | a* | b* | NPDC |
| 0% | 0 | 0 | / | |
| 2% | 0 | 0 | / | |
| 4% | 0 | 0 | / | |
| 6% | 0 | 0 | / | |
| 8% | 0 | 0 | / | |
| 10% | 0 | 0 | / | |
| 15% | 0 | 0 | / | |
| 20% | 0 | 0 | / | |
| 25% | 0 | 0 | 0.25 | |
| 30% | 0 | 0 | / | |
| 35% | 0 | 0 | / | |
| 40% | 0 | 0 | / | |
| 45% | 0 | 0 | / | |
| 50% | 0 | 0 | 0.54 | |
| 55% | 0 | 0 | / | |
| 60% | 0 | 0 | / | |
| 65% | 0 | 0 | / | |
| 70% | 0 | 0 | / | |
| 75% | 0 | 0 | 0.9 | |
| 80% | 0 | 0 | / | |
| 85% | 0 | 0 | / | |
| 90% | 0 | 0 | / | |
| 95% | 0 | 0 | / | |
| 98% | 0 | 0 | / | |
| 100% | 0 | 0 | / | |