# Focus messages
## Control (from Body to Lens)
Sample message:
```
f01600017904 00001983000066000000410000 d70155
```
| Byte | meaning |
| ---- | ------- |
| 4 | auto or manual focus switch: 81 = MF, 83 = AF
| 7 | d6 when in DMF and focusing, else 66 |
| 10 | 80 when autofocus, else 00 |
| 11 | 09 when in DMF and manually focusing, 01 normally, 41 autofocus active |
| ... | ??? |

## Autofocus
sample message:
```
f02700018004 000019830000660000804100002f090a1f 020283 848345f2 3e7f53030000 a80655
```
| Byte | meaning |
| ---- | ------- |
| 18 | controls if focusing in or out |
| 21 | focus speed range 81-88 |

## Electronic manual focus
sample message:
```
f01e00012c04 00001983000066000000410000 2f00001d37440040 990255
```
| Byte | meaning |
| ---- | ------- |
| 18-19 | sets focus point in steps as reported from lens |

## Info (from Lens to Body)
Sample message:
```
f03000014506 0204db49000010f23ed74bd5000c0000000000007b4a00008a0000000000000019131416141515 cc0655
```
| Byte | meaning | range / note |
| ---- | ------- | ----- |
| 1 | limit flags | normal 02, 0A bottom limit, 12 top limit |
| 2 | focus speed?? | |
| 3-4 | focus pos | closest: d74b, furthest: f43e |
| ... | ??? | |

minpos:
```
f0 3000 01 47 06 0a 00 d74b 000010f23ed74bd5000c000000000000d24b00408a0000000000000000000000000000d40655
```
maxpos:
```
f0 3000 01 b7 06 12 00 f43e 000010f43ed54bd5000b000000000000f43e00408a0000000000000000000000000000700755
```