UART Protocol for CAMremote (applies to firmware 2.6.93 and up)

Communication speed: 9600/115200 baud, 8bit, no parity, 1 stop bit

RXD (CAMremote data input): CH0 pin (S)
TXD (CAMremote data output): CH1 pin (S)
Signal Ground: CH0(-) or CH1(-)

Command format (small/big letters are both supported):

command<CR>

where <CR> is code 13 (decimal)

Response from CAMremote:

xx response<CR>

xx is query value in hexadecimal format

response can be:

OK - Command accepted
ERR - Undefined command
NR - Camera not ready


If parameter is supported, command can be given:

command=xx<CR>

where xx is value in hexadecimal format


For example if you like to set shutter speed of the Canon DSLR camera to 1/250 sec then send following command to CAMremote:

tv=78<CR>

Response contains actual shutter speed value camera was able to accept:

78 OK<CR>


If you want to get current value of the shutter speed then send following command to CAMremote:

tv=<CR>

Response will be value of the shutter speed:

78 OK<CR>


List of supported commands:

Command Description Query/Parameter
camstat Communication status of the camera. Response options: OK or NR Yes
tv

Shutter speed (See parameters from table below)

Yes
av

Aperture (See parameters from table below)

Yes
iso

ISO (See parameters from table below)

Yes
recon

Record on

No
recoff

Record off

No
shoot Shutter release No
fpon Full press on No
hpon Half press on No
hpoff Half and Full press off No
a+ Increment Av step No
a- Decrement Av step No
i+ Increment ISO step (Sony only) No
i- Decrement ISO step  (Sony only) No
t+ Increment Tv step No
t- Decrement Tv step No
f+

Drive manual focus

No
f-

Drive manual focus

No
fp-

Next focus point

No
fp+

Previous focus point

No
lvon

Liveview on

No
lvoff

Liveview off

No
lcdon LCD on No
lcdoff LCD off No
dial Dial position (See parameters from table below) Yes
dm Drive Mode (0=Single, 1=Continuous) (Canon only) Yes
wakeup Wakeup the camera No
z+ Zoom in No
z- Zoom out No
z+8 ... z+8 Zoom in (variable speeds 1-8) No
z-1 ... z-8 Zoom out (variable speeds 1-8) No
battlvl Battery level of the camera. Response: battery level in hex format Yes
 

Aperture parameters:

Aperture
Canon
Value (hex)
Nikon/Panasonic/Sony
Value (hex)
1.4 10 8C
1.6 13 A0
1.8 15 B4
2.0 18 C8
2.2 1B DC
2.5 1D FA
2.8 20 118
3.2 23 140
3.5 25 15E
4.0 28 190
4.5 2B 1C2
5 2D 1F4
5.6 30 230
6.3 33 276
7.1 35 2C6
8.0 38 320
9.0 3B 384
10 3D 3E8
11 40 44C
13 43 514
14 45 578
16 48 640
18 4D 708
20 7D0
22 50 898
25 9C4
29 B54
32 C80

 
Shutter speed parameters:

Shutter time (sec) Canon
Value (hex)
Nikon/Panasonic
Value (hex)
Sony UMC
Value (hex)
1/8000 A0 1F40 11F40
1/6400 9D 1900 11900
1/6000 9C
1/5000 9B 1388 11388
1/4000 98 FA0 10FA0
1/3200 95 C80 10C80
1/3000 94
1/2500 93 9C4 109C4
1/2000 90 7D0 107D0
1/1600 8D 640 10640
1/1250 8B 4E2 104E2
1/1000 88 3E8 103E8
1/800 85 320 10320
1/640 83 280 10280
1/500 80 1F4 101F4
1/400 7D 190 10190
1/320 7B 140 10140
1/250 78 FA 100FA
1/200 75 C8 100C8
1/160 73 A0 100FA
1/125 70 7D 10140
1/100 6D 64 10190
1/80 6B 50 101F4
1/60 68 40 10280
1/50 65 32 10032
1/40 63 28 10028
1/30 60 1E 1001E
1/25 5D 19 10019
1/20 5B 14 10014
1/15 58 F 1000F
1/13 55 D 1000D
1/10 53 A 1000A
1/8 50 8 10008
1/6 4D 6 10006
1/5 4B 5 10005
1/4 48 4 10004
0"3 45 3 10003
0"4 43 8A19 4000A
0"5 40 5000A
0"6 3D 8A10 6000A
0"8 3B 8A0D 8000A
1" 38 8101 A000A
1.3" 35 8D0A D000A
1.6" 33 8A0A 10000A
2" 30 8201 14000A
2.5" 2D 990A 19000A
3" 8301
3.2" 2B 20000A
4" 28 8401 28000A
5" 25 8501 32000A
6" 23 8601 3C000A
8" 20 8801 50000A
10" 1D 8A01 64000A
13" 1B 8D01 82000A
15" 18 8F01 96000A
20" 9401 C8000A
25" 9901 FA000A
30" 12C000A
BULB FFFF FFFFFFFE


ISO parameters:

ISO Canon
Value (hex)
Nikon/Panasonic/Sony
Value (hex)
Auto 0 0
25 38
50 40
100 48 64
125 7D
160 A0
200 50 C8
250 FA
320 140
400 58 190
500 1F4
640 280
800 60 320
1000 3EB
1250 4E2
1600 68 640
2000 7D0
2500 9C4
3200 70 C80
4000 FA0
5000 1388
6400 78 1900
8000 1F40
10000 2710
12800 80 3200

  
DIAL Position values (Canon only):

Value (hex) Dial
0 Program AE
1 Shutter Priority
2 Aperture Priority
3 Manual Exposure
4 Bulb Mode
5 Auto-DEP
6 DEP AE
7 Camera Settings Reg
8 Lock
9 Auto
A Night Scene Portrait
B Sports

  
 

20-Mar-2020

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