| 
| INSTRUMENT | FOCUS (Measured) | FOCUS (Nominal) | NOTES | 
| ACAM | 97.75 - 98.25  | 
        98.05 - 98.10  | |
82.5 - 82.8  | 
        82.45 (compromise)  |   82.25 (WYFFOS detector and fiducial TV) 82.65 (outer field) 83.20 (mobile probe)  | |
98.88  | 
        
  | ||
97.7 - 97.95  | 
        
  | ||
95.15 - 95.6  | 
        
  |   Focus needs to be checked with each filter  | |
98.60  | 
        98.5  | ||
98.23 - 98.30  | 
        
  |   98.20  | |
97.6? 97.7 - 97.95  | 
        97.83  | ||
98.04 - 98.25  | 
        98.10  | ||
98.60  | 
        
  | ||
98.35 - 98.53  | 
        
  |   It doesn't need to be perfect: the DM takes out small errors  | |
86.55 - 87.2  | 
        
  | ||
97.45? 97.85 - 97.9  | 
        97.9  | ||
97.90 - 97.95  | 
        97.90 - 97.95  |   Focus with ACAM  | |
95.45 - 95.50  | 
        
  | ||
98.35  | 
        
  |