| Indicates whether photo observation is primary, secondary or other. |
| name | type | description |
| fPhotoMode | F | Returns the Mode value, indexed by name (Primary, Secondary, Family, Outside) |
| fPhotoModeN | F | Returns the Mode name, indexed by value () |
| name | value | description |
| PRIMARY | 1 | Primary object |
| SECONDARY | 2 | Secondary object |
| FAMILY | 3 | Family object |
| OUTSIDE | 4 | Object outside chunk boundary |
| HOLE | 5 | Object within hole (Field.quality=5) |