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Property cases (PropertyCase or PropCase) are basically variables in the camera's RAM that we can read and write from CHDK by using uBasic commands get_prop and set_prop. "Under the hood" some other uBasic commands work by changing propcases, making it possible to use them in a portable way. Some propcases are read-only. Often writing to a propcase will have a different effect than pressing the corresponding buttons on the camera's user interface. Typically this means that while you may change something like the shutter speed and your change will be effective in your photo, it may not be updated to the camera's on-screen display.

To find out which Property case a function changes see this!

Notes:


Attention

Property cases are different for Digic II, Digic III and Digic IV cameras.
EXAMPLE: A570IS ISO is at #149, not #21 like on the S3IS, and the white balance control is #268, not #206. Furthermore, some Digic III cameras (G7, SD800IS, SD900) use the Digic II property set.
You are advised to confirm that these properties are appropriate for your camera before you attempt to change them.


Digic II (propset1)

Digic II based camera (and some Digic III cameras: G7, SD800IS, SD900)

# R/W Description A620 S3IS SD900
0,236 Shooting MODE Dial position * *
1 Photo effect
2 Custom MyColors Sharpness
3 Custom MyColors Saturation
4 Custom MyColors Contrast
5 White Balance Mode (0,1,2,3,4,5,7 = Auto, Day Light, Cloudy, Tungsten, Fluorescent, Fluorescent H, Custom) S2: 6=flash same as SX10 maybe all S-Series
6 Drive mode (0=normal, 1=continuous, 2=timer)
8 Hi-speed continuous (1=OFF, 0=ON)
9 Metering mode (0=eval, 2=center, 1=spot)
10 Spot AE Point (0=center, 1=auto focus point)
11 Focus mode (0=Auto, 1=macro, 4=MF 5=super macro)
12 Manual Focus (0=Auto, 1=Manual)
13 AF
S3IS: 0=Single, 1=continuous
*
14 Delay of selftimer (in msec)
15 Flash adjust mode
S3IS: 0=Auto, 1=Manual (see 28&29)
*
16 Flash mode (0,1,2 = flash auto, flash on, flash off)
18 Red eye mode (0=OFF, 1=ON)
19 Flash slow sync (0=OFF, 1=ON)
20 Flash Sync Curtain (0=1st, 1=2nd)
21 ISO value
S3IS: 0=auto, 1=ISO-HI, or actual ISO: 80,100,etc
*
23 Image quality
S3IS: 0,1,2 from best to worst
*
24 Image resolution
S3IS: 0,1,2,4,8 for L,M1,M2,S,W
*
25,26 EV correction (units: +/- 96 per 1 stop range) (On s3is and i guess on more models: Also used in movie mode!, but AE lock has to be activated -> 205 to 1)
28 Flash correction (units: +/- 96 per 1 stop range, if #15=0)
29 Manual flash output (units 0,1,2 from less to full, if #15=1)
32 Exposure bracket range (units: 96 per 1 stop extension)
34 Focus bracket range (2=Smallest, 1=Medium, 0=largest)
36 Bracket mode (0=none, 1=EV, 2=focus)
37 Orientation sensor
SD900: 0=Normal, 270=Left, 90=Right also S2: -1=inverse not 180
*
38 Automatic Image Rotation
S3IS / SD900: 1=ON, 0=OFF
* *
39 Chosen Av (User AV)
40 Chosen Tv (User TV)
SD900: 65152=15", 65184=13", 65218=10", 65248=8", 65280=6", 65312=5", 65344=4", 65376=3.2", 65408=2.5", 65440=2", 65472=1.6", 65504=1.3", 0=1"
*
46/47 Seem to be influenced by stitch mode, i guess this is important for exif data -> data for stitch programs or the canon stitch assisant - assumption!
48 Stitch shot number. Positive for left to right, negative for right to left (a540)
52 Stitch Mode
S3IS: 0=from left to right, 1=from right to left, 2=bottom to top, 3=top to bottom, 4=top left->top right->bottom left->bottom right
*
57 Digital Zoom
S3IS: 0 - 6, 0 is no digital zoom, 6 is "most digital zoom" (48x)
SD900: 3=2.3x, 1=1.4x, 0=no Zoom / Default
* *
58 Digital Zoom State
S3IS: 1=On, 0=Off
SD900: 2=1.4x / 2.3x, 1=Default, 0=Off
* *
63 AF-light
S3IS / SD900: 1=ON, 2=OFF
* *
64 manual settings
65,66 Focus distance
67 focus ok (green, not yellow) when in photo mode 1=OK, 0=not set
68 Coming Av
69 Coming Tv
71 422
72 Looks like it's ~ISO*something + 380
73 371
74 AE lock activated
S3IS: 1=yes, 0=no; see 205 (also in movie mode)
*
75 0
76 0
77 min available Av
78 R Flash fired
79 RW Flash fire
80 1
81 1
82-85 Often the same, sometimes slightly different
86 Av
87 0
88 2
89 0
90 0
91 5
92 0
93 0
94 0
95 8
96 10
99 Zoom step
S3IS: 0 = open wide, 128 = maximum zoom, on a620 this will be 8 i guess
*
100 Custom White Balance (28 bytes)
101 constantly varying with light depends on White Balance and Scene Mode
120 280457692 after shooting s2
126 Video FPS
SD900: 30=30FPS, 15=15FPS
*
127 Video resolution
SD900: 3=1024x768, 2=640x480, 1=320x240, 0=160x120
*
128 Video resolution = 640x480
SD900: 1=640x480, 0=320x240/1024x768/160x120
*
171 Zoom
172 Digital zoom
177 intervalometer #of shots
178 File numbering (Continuous=0, Auto Reset=1)
181 Display mode (record mode only) (0 = show info icons, 1 = Do not show info icons, 2 = LCD off, 3 = EVF)
184 Slideshow Settings - repeat slideshow (1 = repeat, 0 = do not repeat)
185 Slideshow Settings - duration (1 = 3 seconds, 2 = 4s, 3 = 5s, 4 = 6s, 5 = 7s, 6 = 8s, 7 = 9s, 8 = 10s, 9 = 15s, 10 = 30s)
186 Print Settings/DPOF (1 = standard, 2 = overview, 3 = both)
187 Print Settings/DPOF (1 = date, 0 = no date)
188 Print Settings/DPOF (1 = filenumber, 0 = no filenumber)
190 In Postcard mode this determines what will be "printed" into the pictures
available on cameras which support this
A620: 0 = off, 1 = date, 2 = date & time
*
192 AF Frame/Flexizone x-position
193 RW AFL active / activate AF
194 used part of sensor when digital zoomed
S3IS: no digital zoom = 2816 then descending with increased digital zoom: 2048,1600,1280,1024,832,704 - can be useful!
*
195 max resolution?
196 R Language Setting:
2 English, 258 German, 514 French, 770 Dutch, 1026 Danish, 1282 Finnish, 1538 Italian, 1794 Norwegian, 2050 Swedish, 2306 Spanish, 2562 Simplified Chinese, 2818 Russian, 3074 Portuguese, 3330 Greek, 3586 Polish, 3842 Czech, 4098 Hungarian, 4354 Turkish, 4610 Traditional Chinese, 4866 Korean, 5122 Thai, 5378 Arabic, 5634 Japanese) (Confirmed on s3is & a620 and several other cams)
NOTE: This setting directly is related to NTSC/PAL setting. These numbers are valid for PAL. For NTSC, all these numbers are decremented by 1, meaning English is 1 and German is 257 in NTSC (instead of 2 and 258).
* * *
200 Selected Movie mode *
204 Related to flash (at least on s3is) - if flash popped down, value is 4, if up value is 3 (in flash ON) and 0 (in Flash AUTO mode) - on a620 when i disable flash, this is also 4 (i guess we can ignore this value on cameras with a "fixed" flash, and use this on cameras with "pop-up flash" to detect if the flash is popped up!) *
205 1 during shooting process (this may be an indication that exposure has been determined; it is set shortly after shoot_half, and remains set if AE lock activated. See #74) (in movie mode this is 1 when you activate AE Lock!!!)
206 Submode of "MyColors?" mode, including Color accent/swap
S3IS: 0-11: off,strong,neutral,sepia,black/white,dia,brighter skintone,darker skintone,strong blue,strong green,strong red,custom color
* *
207 Custom MyColors Red
208 Custom MyColors Blue
209 Custom MyColors Green
210 Custom MyColors Skin Tone
211 Color Accent color
212 Color Swap from color
213 Color Swap to color
218 Custom timer continuous (value: # of shots to be taken)
219 Self Timer setting
S3IS: 0=2 sec, 1=10 sec, 2=custom continuous
*
223 Mic - recording frequency (0 = 11.025 kHz, 1 = 22.050 kHz, 2 = 44.100 kHz)
226 MODE Dial - looks like it's the same as propcase 0 (S3IS: tested in scene mode, cycling through "programs") * *
227 Mic Level
S3IS: 1-5, low to high
*
228 Mic Wind Protection
S3IS: 1=ON, 0=OFF
*
229 IS (0,1,2,3 = continous, shoot only, panning, off)
230 Converter (0=off, 1 = wide, 2 = tele)
231 Color Accent tolerance setting
233 Color Swap/Accent tolerance
235 Safety Shift (0 = off, 1 = on)
236 MODE Dial -
237 47
254 Focus. auto, 320-725
257 Color Swap tolerance setting
260 500
262 0 in fireworks or movie mode, otherwise 1
274 411
298 201329664
299 -201264128
* = camera supports PropertyCase (PropertyCase value may be camera specific)
- = camera does not support PropertyCase (at least value does not change)


Digic III & Digic IV (propset2)

  • Digic III based cameras: SD1000, A470, A570IS, A590IS, A650IS, SX110 (and also others)
  • Digic IV based cameras: SX10, SX1, SD990, SX200 (and also others); notes like [SX10] should fit also for other Digic IV based cameras with this feature...
# R/W Description A2000
3 RO Auto-Exposure Lock
4 Exposure bracket range (units: 96 per stop)
5 AF Assist Beam (0=Off, 1=On)
6 RW Focus Mode (0, 1, 3, 4, 5 = Normal, Macro, Infinity, Manual, Super Macro [SX10])
8 AiAF Mode (0=On, 1=Off, 2=FaceDetect)
11 RW Auto-Focus Lock
12 Continuous AF (0=Off, 1=On) [SX10]
18 RW Auto-Focus state after half-press (stays 1 if shoot_half is released!) (0 orange, >=1 green, with AiAF=off only 0 or 1, with enabled AiAF or Face the value depends on position & number of AF boxes)
21 Auto Rotate (0=Off, 1=On)
23 RW Av (for next shot, updates on half-shoot), 96 per stop
24 Min Av (widest available aperture for current zoom, updates on half shoot), 96 per stop. Note: on SD990, this includes the ND filter, if the ND was selected by the camera in an auto mode.
25 Min Av (widest available aperture for current zoom, updates on half shoot), 96 per stop. Note: on SD990, this does not include the ND filter.
26 RW User Av (user selected "market" value in M/Av modes, writes become effective on LCD on half shoot), 96 per stop.
29 Bracket mode (0=None, 1=EV, 2=Focus)
34 Bv
49, 50 MODE Dial
55 Custom Color: Saturation (-2, -1, 0, 1, 2 = 254, 255, 0, 1, 2)
57 JPEG Quality (0=Superfine, 1=Fine, 2=Normal)
59 Custom Color: Contrast (-2, -1, 0, 1, 2 = 254, 255, 0, 1, 2)
60 Converter (0, 1, 2, 4)
61 Language + video standard settings; Value=PAL; for NTSC=value-1 (A720)
English=1, German=257, French=513, Dutch=769, Danish=1025, Finnish=1281, Italian=1537, Norwegian=1793, Ukrainian=2049, Swedish=2305, Spanish=2561, Chinese_simplified=2817, Russian=3073, Portuguese=3329, Greek=3585, Polish=3841, Czech=4097, Hungarian=4353, Turkish=4609, Chinese_traditional=4865, Korean=5121, Thai=5377, Arabic=5633, Romanian=5889, Japanese=6145
63 Number of continuous shots taken last time yes
64 RW Flash Sync Curtain (0=1st, 1=2nd)
65 Subject Dist 2 ("Near limit", most linear to real distance. You can get-and-set this prop_id, but it doesnt affect the near limit and/or the focus - tested with A590).
66 RW Date stamp (0=Off, 1=Date, 2=Date & Time); Works on G10. Might work only in postcard mode on some cameras
79 Delta Sv (What is this? Someone please add a description.)
91 RO Digital Tele-Converter mode (>0 if enabled)
92 RO Digital zoom source image width in pixels; also 104
94 Digital zoom mode (1="Standard", 0=any other mode)
95 RO Digital Zoom depth (0--6: 0=none, 1--6 are for camera dependent zoom steps, higher number = higher magnification)
102 RO Drive Mode (0=Single, 1=Continuous, 2=Continuous Shooting AF, 3=FaceSelf-Timer, 4=2 sec. Self-Timer) yes
103 changes with light only in M-Mode (-445 is completely dark and 328 is fully bright. Also depends on the current av/tv setting.)
105 Display mode (record mode only) (0,1,2,3 = show info icons, do not show info icons, LCD off, EVF)
107, 207 RW Exposure Shift/Compensation (32 for 1/3 stop) also 127?
111 External flash state (0=Absent, 1=Present and turned on, 2=Present but turned off) 0 (absent)
113 Focus bracket range (2=Smallest, 1=Medium, 0=largest)
115 RO Ready to shoot, focus okay.
117 File numbering (Continuous=0, Auto Reset=1)
121 RW Flash adjust mode (0=Auto, 1=Manual (see 127&141) 0 in all cases
122 RO Flash used in last shot (0,1 = Flash not used, Flash used)
127 RW Flash exposure compensation (units: +/- 96 per 1 stop range, if #121=0)
133 RO Manual Focus Mode (0=Auto, 1=Manual Focus)
141 RW Manual flash output (units 0,1,2 from min to full, if #121=1)
143 RW Flash Mode (0,1,2 = flash auto, flash on, flash off) yes, RW tested
145 IS (0,1,2,3 = continous, shoot only, panning, off)
149 RW ISO Mode (0=Auto, 1=High Auto, 80=ISO 80, 100=ISO 100...)
155 RW Metering Method (0, 1, 2 = Evaluative, Spot, Center Weighted Avg)
165 RW Time lapse movie shoot interval (milli-seconds)
166 Movie frame rate
169 Video size mode (160=0, 320=1, 640=2, ?=3, 1280x720=4)
170 Video play mode (LP=0, SP=1)
184 My Colors (0 - 11): 0=Off, 1=Vivid, 2=Neutral, 3=B/W, 4=Sepia, 5=Positive Film, 6=Lighter Skin Tone, 7=Darker Skin Tone, 8=Vivid Red, 9=Vivid Green, 10=Vivid Blue, 11=Custom Color)
192 R ND Filter (0=off, 1=on) Note: you can write to it, but actual filter state doesn't change.
195 Optical Zoom position (0,1,2,3,4,5,6...128) (0 to 128 on SX10)
196 (? Scene dependent/ stays 0 when scene is black or when scene has optimal light)
197 owner name ([1])
206 Shooting in progress
208 Flash Ready (1 during shutter half press after metering if camera is going to use flash)
212 Review info (0=Off, 2=detailed, 3=focus check) [SX10]
213 Red-Eye (0 "Off", 1 "On")
218 RW Picture Resolution (0=L, 1=M1, 2=M2, 3=M3, 4=S, 5=RAW, 6=Postcard, 8=LW, 9=SW)
219 RO Orientation Sensor (0,90,270)
220 Safety FE (0 "Off", 1 "On")
223 Timer Mode (0,1,2 = 2 Seconds, 10 Seconds, Custom), SX 200 IS & SD 780 0,1,2,3,4=Off, 2 Seconds, 10 Seconds, Custom, Face Detection
224 Timer Delay (ms) (can't override)
225 Custom Color: Sharpness (-2, -1, 0, 1, 2 = 254, 255, 0, 1, 2)
227 "long time exposure" indicator: 1 always in "Night snapshot" scene mode & when the exposure time is set to >= 1s
228 RW Audio channels (0=1ch, 1=2ch). Right channel mute if 2ch selected.
229 RW Audio sample rate (0=11025, 1=22050, 2=44100)
230 RW Audio sample format (0=u8, 1=s16le). U8 gives "Unidentified Image" in Play mode but works with other players.
233 Orientation stitch assistant (left to right=0, right to left=1)
238 Stitch shot number. Positive for left to right, negative for right to left (d10)
245 Subject Dist 1 (equals id 65 on the A590)
246 Sv Market (for next shot, updates on half-shoot), 96 per 1 stop
247 Sv (for next shot, updates on half-shoot), 96 per 1 stop
249 Digital Zoom position, same as #95, 0-6 on a590
251 Optical Zoom position, same as #192, 0-128 on [SX10], same as #195 on a590, 0-7 on a590
252 Manual focus: equal value like 65, 245
254 Focus related, -1 for infinity
262 RW Tv (for next shot, updates on half-shoot), 96 per 1 stop
264 RW User Tv (user selected value in M/Tv modes, writes become effective on LCD on half shoot), 96 per 1 stop
268 White Balance Mode (0,1,2,3,4,5,6,7 = Auto, Day Light, Cloudy, Tungsten, Fluorescent, Fluorescent H, Flash [SX10], Custom) no flash; custom=7
269 White Balance Value (Middle around 900. Less corrects red and higher corrects blue. Can't override.)
277 Safety MF (0 "Off", 1 "On")
280 RAW+JPG (Raw+Jpg off = 0, Raw+Jpg on = 1)
290 iContrast setting (0=off, 1=on) [SX10]
293 Servo AF (0=off, 1=on) [SX10]
294 Aspect / Widescreen (1=widescreen, 0=standard) [SX1] ([2])
296 RO ND filter status (0 off, 1 on) for manual mode. NOT updated in auto modes (SD990). Note: you can write to it, but actual ND state doesn't change.
297 ??? ([SX10],[SD990]: 1 after half-press)

On the A590 it seems that possible prop-ids range from 0 to 287. IDs greater than 287 will return always "14".


Digic IV (propset3)

Attention

This is work in progress, please help to complete this table!

  • New propcases introduced with the G11
  • Digic IV based cameras: G11, SX1 IS, SX120, probably S90, SD4000, SX210
  • include\propset3.h
# R/W Description SD4000
5 RW AF Assist Beam Setting (0=Off, 1=On)
18 R Auto-Focus state (0 = unfocussed, 1 = focussed)
23 R Av96 value (i.e. f2.8 = 283[sic!], f3.2 = 320, and further in steps of 32)
26 ? User Av (user selected "market" value in M/Av modes) *
34 R Brightness (Bv)
49, 50 ? MODE Dial *
63 R Number of shots taken during last continuous shoot, Or, number of shots taken so far in current continuous shoot
66 RW Date Stamp (0=None, 1=Date, 2=Date & Time)
92 R Digital zoom source image width in pixels; also 104
94 Digital zoom mode (1 = Standard, 0 = all other modes)
107, 209 RW Exposure Compensation. Change this by 32 units for each 1/3 step. Both these properties have to be set to take effect. The comment for property 209 has thus been struck out for the time being.
127 RW Flash Exposure Compensation (+/- 32, 64, 96, 128, 160, 192 = +/- 1/3, 2/3, 1, 1 1/3, 1 2/3, 2) Note: you can write to it, but actual state doesn't change.
132 RW

Light level determination after half-press (0 if there is plenty of light, 1 if it would benefit from flash) Note: this doesn't necesarily mean "Raise the flash" is displayed, but it does mean the camera will use the flash if it is rasied.

133 ? Auto-Focus (0)/Manual Focus (1)
138 RW Low-light mode (sensor sends 1/4 the data; 0=off, 1=on; use with picture size M)
149 ? ISO Mode. 0=Auto; otherwise value = ISO for 80, 100, 200, 400, 800, 1600, 3200 *
155 RW Meter Mode (0=evaluative, 1=spot, 2=center weighted) Note: you can write to it, but actual mode doesn't change. *
194 RW ND Filter (0=off, 1=on) Note: you can write to it, but actual filter state doesn't change.
197 RW Optical Zoom Setting (0-13) Note: you can write to it, but actual zoom state doesn't change.
209 RW Exposure Compensation Dial (+/- 32, 64, 96, 128, 160, 192 = +/- 1/3, 2/3, 1, 1 1/3, 1 2/3, 2) Note: you can write to it, but actual state doesn't change.
210 Shooting in progress
214 RW Image Data Capture 0 RAW, 1 JPG, 2 RAW+JPG
220 RW Picture Size (0,1,2,3,4,5,7,8 = L,M1,M2,M3,S,RAW,M,W)
221 RW Camera Orientation Sensor (0, 90, 270) Note: you can write to it, but actual state doesn't change. *
253 RW Optical Zoom Setting (0-13) Note: you can write to it, but actual zoom state doesn't change.
266 ? Tv *
270 White balance mode (Auto, Day Light, Cloudy etc.) [3] *
271 White balance fine tuning (color channel multipliers, 28 bytes for propset 1-2) (PROPCASE_WB_ADJ in CHDK, used in DNG for "white balance embedding") [4] *
284 RW Rec Raw + L-jpg (0=off, 1=on) Note: you can write to it, but actual state doesn't change.
294 RW iContrast (0=off, 1=auto) Note: you can write to it, but actual state doesn't change.
* = camera supports PropertyCase (PropertyCase value may be camera specific)
- = camera does not support PropertyCase (at least value does not change)

Digic IV & Digic V (propset4)

Attention

This is work in progress, please help to complete this table!

  • Digic IV based cameras: G12, S95, etc
  • Digic V based cameras: SX40
  • include\propset4.h
# R/W Description S95 G12

5

RW

AF Assist Beam (0=Off, 1=On)

6

Rw

Focus Mode (0=Normal, 1=Macro, 2=portrait, 3 landscape, 4=Manual Focus)

8

RO

AiAF Mode (1=Flexizone, 2=FaceAIAF or Tracking AF)

12

RO

Continuous AF (0=Off, 1=On)

18

R?

Auto-Focus state after half-press (stays 1 if shoot_half is released!) (0 orange, >=1 green, with AiAF=off only 0 or 1, with enabled AiAF or Face the value depends on position & number of AF boxes)

29

RO

Bracket Mode (0=None, 1=EV, 2=Focus)

49

R?

Auto (-32768), Low Light (-32735), Quickshot (-32221), Scene (16399), Video (2614), C1 and C2 (-32764), M (-32767), AV (-32766), Tv (-32765), P (-32764)

50

R?

Auto (-32768), Low Light (-32735), Quickshot (-32221), Scene (16399), Video (2614), C2 (8241), C1 (8240), M (-32767), AV (-32766), Tv (-32765), P (-32764)

57

R?

JPEG compression level (1=Fine, 2=Normal)

*

63

RO

Number of continuous shots taken last time

64

RW

Flash Sync Curtain (0=1st, 1=2nd)

65

(249)

(256)

R?

Subject Distance (-1=Infinity, 14877-68)

102

RO

Drive Mode (0=Single, 1=Continuous, 2=Continuous AF)

105

RO

LCD Display Mode (0=Icons+Gridlines+Histogram, 1=Icons, 2=No icons, 3=Main screen off EVF on)

Those values are only for record mode - in playback mode it is always 1.

107

(211)

R?

Exposure Compensation: Change this by 32 units for each 1/3 step, gets applied by turning the dial 0 (0), +1/3 (32), +2/3 (64), +1 (96), +1 1/3 (128), +1 2/3 (160), +2 (192) -1/3 (-32), -2/3 (-64), -1 (-96), -1 1/3 (-128), -1 2/3 (-160), -2 (-192)

211 gets applied with this value on half shoot

112

R

Something to do with aspect ratio? (320=4:3, 320=16:9, 320=3:2, 240=1:1, 192=5:4)

Writing here causes CHDK to crash - use 300 instead

115

R?

Ready to shoot, focus okay

Manual focus (1) otherwise evaluated at half shoot

127

R?

Flash exposure compensation (units: +/- 96 per 1 stop range, if #121=0)

0 (0), +1/3 (32), +2/3 (64), +1 (96), +1 1/3 (128), +1 2/3 (160), +2 (192) -1/3 (-32), -2/3 (-64), -1 (-96), -1 1/3 (-128), -1 2/3 (-160), -2 (-192)

132

RW

Light level determination after half-press (0 if there is plenty of light, 1 if it would benefit from flash) Note: this doesn't necesarily mean "Raise the flash" is displayed, but it does mean the camera will use the flash if it is rasied.

133

RO

Manual Focus (0=Off, 1=On)

143

RW

Flash Mode (0=Auto, 1=On, 2=Off)

145

R

IS Mode (0=Continuous, 2=Shoot Only, 4=Off)

149

RW

ISO Mode (0=Auto, 100=ISO 100; 200=ISO 200; 400=ISO 400; 800=ISO 800; 1600=ISO 1600; 3200=ISO 3200)

150

R?

Max ISO Speed (ISO Auto)

400, 500, 640, 800, 1000, 1250, 1600

151

R?

ISO Auto Rate of Change (0=Normal, 1=Slow, 2=Fast)

157

R

Metering Mode (0=Evaluative, 1=Spot, 2=Center Weighted Avg)

168

R?

Video FPS (0=30fps, 1=24fps, 2=240fps, 3=120fps)

(affects only MOV file header info, not the actual fps)

171

RW

Video Resolution (5=1920x1080, 4=1280x720, 2=640x480, 1=320x240)

196

RO

ND Filter Status (0=Off, 1=On)

199

(255)

RO

Optical Zoom, set after zooming has been completed from 255 No zoom (0) 1 - 13

200

R?

Constantly changing number, but less often than 273

201

owner name ([5])

210

RO

Shooting In Progress (0=not shooting or auto-focus in progress, 1=shoot_half is pressed and auto-focus is complete - goes back to 0 the moment shoot_half is released)

This is the property returned by get_shooting()

211

(107)

R?

Exposure Compensation: Change this by 32 units for each 1/3 step, gets applied by half pressing the shutter 0 (0), +1/3 (32), +2/3 (64), +1 (96), +1 1/3 (128), +1 2/3 (160), +2 (192) -1/3 (-32), -2/3 (-64), -1 (-96), -1 1/3 (-128), -1 2/3 (-160), -2 (-192)

On half shoot 107 gets written here

214

R?

Image Data Capture Mode (0=RAW, 1=JPG, 2=RAW+JPG)

216

R?

Review Info (0=Review off, 2=Detailed, 3=Focus Check)

217

R?

Red-Eye Lamp (0=Off, 1=On)

220

R?

JPEG Only (0=RAW/RAW+JPEG, 1=JPEG)

222

RW

Image Resolution (0=L, 1=M1, 2=M2, 4=S)

223

R?

Camera Orientation (0, 90, 270)

224

R?

Safety FE (0=Off, 1=On)

249

(65)

(256)

R?

Minimum Subject focus Distance (R2)

Infinity (-1), Increases as optical zoom increases

255

RO

Optical Zoom (0-200)

This is the property returned by get_zoom()

256

(65)

(249)

R?

Subject Distance (S), set of half shoot?

Infinity (-1), 14877-68

272

RW

White Balance (0=AWB, 1=Sunlight, 2=Cloudy, 3=Tungsten, 4=Fluorescent, 5=Fluorescent H, 6=Flash, 7=Underwater, 8=Custom 1, 9=Custom 2)

273

R?

Ever changing number?

283

R?

Safety MF (0=Off, 1=On)

296

R

iContrast (0=Off, 1=Auto)

299

R?

Servo AF (0=Off, 1=On)

300

RW

Aspect Ratio (0=4:3, 1=16:9, 2=3:2, 3=1:1, 4=5:4)

Updating this takes effect immediately but display won't update til next refresh (half-shoot, switch to review and back, etc). Canon menu ignores this and retains old value.

318

R?

DR Correction (0=0%, 200=+200%, 400=+400%)

319

R?

Jpeg only?? (0=RAW/RAW+JPEG, 1=JPEG)

349

R?

AF Frame (0=Face AiAF/Flexizone, 1=Tracking AF)

* = camera supports PropertyCase (PropertyCase value may be camera specific)
- = camera does not support PropertyCase (at least value does not change)

Digic V (propset5)

Attention

This is work in progress, please help to complete this table!

  • Digic IV based cameras: SX160, A810, etc
  • Digic V based cameras: SX50
  • include\propset5.h
# R/W Description SX50 ???

3

RW

AE lock  (0=not locked, 1=locked)

5 RW AF Assist Beam (0=Off, 1=On)

6

Rw

Focus Mode (0=Normal, 1=Macro, 2=portrait, 3 landscape, 4=Manual Focus)

8

RO

AiAF Mode (1=Flexizone, 2=FaceAIAF or Tracking AF)

12

RO

Continuous AF (0=Off, 1=On)

18

R?

Auto-Focus state after half-press (stays 1 if shoot_half is released!) (0 orange, >=1 green, with AiAF=off only 0 or 1, with enabled AiAF or Face the value depends on position & number of AF boxes)

22 AV2 value - saved in JPEG and shown on Canon OSD
23 AV
24 Min AV

29

RO

Bracket Mode (0=None, 1=EV, 2=Focus)

34 BV

49

R?

Auto (-32768), Low Light (-32735), Quickshot (-32221), Scene (16399), Video (2614), C1 and C2 (-32764), M (-32767), AV (-32766), Tv (-32765), P (-32764)

55 RW Custom MyColors Saturation (Canon Menu options: 254, 255, 0, 1, 2)

57

R?

JPEG compression level (1=Fine, 2=Normal)

59 RW Custom MyColors Contrast (Canon Menu options: 254, 255, 0, 1, 2)

63

RO

Number of continuous shots taken last time

64

RW

Flash Sync Curtain (0=1st, 1=2nd)

65

R?

Subject Distance (-1=Infinity, 14877-68)

66 RW Date Stamp (0=None, 1=Date, 2=Date & Time)
79 Delta SV
91 Digital Zoom Mode
94 Digital Zoom State
95 Digital Zoom Position

102

RO

Drive Mode (0=Single, 1=Continuous, 2=Continuous AF)

105

RO

LCD Display Mode (0=Icons+Gridlines+Histogram, 1=Icons, 2=No icons, 3=Main screen off EVF on)

Those values are only for record mode - in playback mode it is always 1.

107

(211)

R?

Exposure Compensation 1: Change this by 32 units for each 1/3 step, gets applied by turning the dial 0 (0), +1/3 (32), +2/3 (64), +1 (96), +1 1/3 (128), +1 2/3 (160), +2 (192) -1/3 (-32), -2/3 (-64), -1 (-96), -1 1/3 (-128), -1 2/3 (-160), -2 (-192)

211 gets applied with this value on half shoot

121 Flash Adjust Mode
122 Flash Fire
127 RW

Flash exposure compensation (units: +/- 96 per 1 stop range)

0 (0), +1/3 (32), +2/3 (64), +1 (96), +1 1/3 (128), +1 2/3 (160), +2 (192) -1/3 (-32), -2/3 (-64), -1 (-96), -1 1/3 (-128), -1 2/3 (-160), -2 (-192)

133

RO

Manual Focus (0=Off, 1=On)

141 Flash Manual Output

143

RW

Flash Mode (0=Auto, 1=On, 2=Off)

145

R

IS Mode (0=Continuous, 2=Shoot Only, 4=Off)

149

RW

ISO Mode (0=Auto, 100=ISO 100; 200=ISO 200; 400=ISO 400; 800=ISO 800; 1600=ISO 1600; 3200=ISO 3200)

151

R?

ISO Auto Rate of Change (0=Normal, 1=Slow, 2=Fast)

157

R

Metering Mode (0=Evaluative, 1=Spot, 2=Center Weighted Avg)

177 RW Custom MyColors Blue (Canon Menu options: 254, 255, 0, 1, 2)
178 RW Custom MyColors Green (Canon Menu options: 254, 255, 0, 1, 2)
179 RW Custom MyColors Red (Canon Menu options: 254, 255, 0, 1, 2)
180 RW Custom MyColors Skin Tone (Canon Menu options: 254, 255, 0, 1, 2)
188 RW My Colors (0 - 11): 0=Off, 1=Vivid, 2=Neutral, 3=B/W, 4=Sepia, 5=Positive Film, 6=Lighter Skin Tone, 7=Darker Skin Tone, 8=Vivid Red, 9=Vivid Green, 10=Vivid Blue, 11=Custom Color)

196

RO

ND Filter Status (0=Off, 1=On)

199

RO

Optical Zoom, set after zooming has been completed from 255 No zoom (0) 1 - 13

210

RO

Shooting In Progress (0=not shooting or auto-focus in progress, 1=shoot_half is pressed and auto-focus is complete - goes back to 0 the moment shoot_half is released)

This is the property returned by get_shooting()

211

(107)

R?

Exposure Compensation 2: Change this by 32 units for each 1/3 step, gets applied by half pressing the shutter 0 (0), +1/3 (32), +2/3 (64), +1 (96), +1 1/3 (128), +1 2/3 (160), +2 (192) -1/3 (-32), -2/3 (-64), -1 (-96), -1 1/3 (-128), -1 2/3 (-160), -2 (-192)

On half shoot 107 gets written here

212 Is Flash Ready
217 R? Flash Settings: Red eye lamp (0=Off, 1=On)
220 R? Flash Settings: Red eye correction (0=Off, 1=On)
224 R? Flash Settings: Safety FE (0=Off, 1=On)

222

RW

Image Resolution (0=L, 1=M1, 2=M2, 4=S)

223

R?

Camera Orientation (0, 90, 270)

227 Timer Mode
228 Timer Delay
229 RW Custom MyColors Sharpness (Canon Menu options: 254, 255, 0, 1, 2)
237 Stitch Direction
242 Stitch Sequence

249

R?

Minimum Subject focus Distance (R2) Infinity (-1), Increases as optical zoom increases

250 Market SV

265

R?

TV2

266 TV
268 User TV

272

RW

White Balance (0=AWB, 1=Sunlight, 2=Cloudy, 3=Tungsten, 4=Fluorescent, 5=Fluorescent H, 6=Flash, 7=Underwater, 8=Custom 1, 9=Custom 2)

278 R? Wind Filter (0=Off, 1=On)
283 R? Safety MF (0=Off, 1=On)
296 R iContrast (0=Off, 1=Auto)

299

R?

Servo AF (0=Off, 1=On)

300

RW

Aspect Ratio (0=4:3, 1=16:9, 2=3:2, 3=1:1, 4=5:4)

Updating this takes effect immediately but display won't update til next refresh (half-shoot, switch to review and back, etc). Canon menu ignores this and retains old value.

310 R? Blink detection (0=Off, 1=On)

347

Sv

358

R?

GPS

* = camera supports PropertyCase (PropertyCase value may be camera specific)
- = camera does not support PropertyCase (at least value does not change)

PropertyCase NOT found

  • Manual White balance settings, needed for white balance fine tuning
Manual White balance property case for G11 is 0x10F.
It was found based on the analysis of firmware and needs confirmation from developers who can access camera to perform some tests to verify is it correct or not.
(cppasm)
  • MF Point Zoom
  • AF-assist Beam
  • Number of shots in Custom drive mode
  • Review time - it's in get_parameter_data(9)
  • Selected Scene Mode
  • Current Display Mode, i.e. no info, more info, full info, where you cycle through by pressing disp.

Where could these be stored? I scanned all Property Cases from 0 till 300, after that everything seems to be 0. PTT 01:59, 9 July 2007 (UTC)

  • A face is being detected
Some parameters can be read with the function get_parameter_data(). 
   ?ut the numbers of parameters depends on the camera model. For example, Canon 710 IS: 
72  Delay in Custom drive mode (in seconds, 1 byte) 
73  Number of shots in Custom drive mode (1 byte) 
 9  Review time (in msec, 4 bytes) 
54  Current Display Mode for record review mode - 0,1 or 2 (2 bytes) 
53  Current Display Mode for view mode - 0,1 or 2 (2 bytes)

get_parameter_data()

Here are a few values that I think work that way with get_parameter_data() on my ixus 950 is... maybe someone can test and verify them for this cam or even for others?

2    Next Image/Movie Number (0-9999)   
9    Review Time (0=Off, 2000-10000=2-10sec, -1=Hold)
18   LCD Brightness     
56   Current Display Mode for view mode - 0,1 or 2     
73   Number of shots in Custom drive mode     
104  "Show clock" (in seconds)

Timezone Information

On my cam (ixus 950 is) get_parametr_data(20,...) seems to be the timezone information. There is a strong correlation of the following values (Names are in german or translated):

(DST Must be somewhere else)     
0x010100 London ( = 65792 )     
0x010101 Paris     
0x010102 Kairo     
0x010103 Moskau     
0x010104 Teheran     
0x010105 Dubai     
0x010106 Kabul     
0x010107 Karachi     
0x010108 Delhi     
0x010109 Kathmandu     
0x01010A Dacca     
0x01010B Yangon     
0x01010C Bangkok     
0x01010D HongKong     
0x01010E Tokyo     
0x01010F Adelaide     
0x010110 Sydney     
0x010111 Solomon Islands     
0x010112 Wellington     
0x010113 Chathman Islands     
0x010114 Samoa     
0x010115 Honolulu     
0x010116 Anchorage     
0x010117 LosAngeles     
0x010118 Denver     
0x010119 Chicago     
0x01011A NewYork     
0x01011B Caracas     
0x01011C NewFoundland     
0x01011D Rio De Janeiro     
0x01011E Fernando de noronha     
0x01011F Azoren ( = 65823 )

Given that there are more than 24 of such entries, these seem to be offsets into somewhere else, will need to find it there... My cam also has a travel timezone setting. I get really high numbers for when chosing one, so it looks to me like they get somewhat ORed together with a shift or so... need to still test...

Discovering PropertyCase meanings and values

Notice

In CHDK → Miscellaneous → Debug parameters menu, there are options to allow you to view the current PropertyCase values.


For property cases that are not yet documented, you have two ways of discovering what they are:

  • look for which property case changes after modifying camera settings (see below).
  • disassemble the Canon firmware and look for how property cases are used by functions of known purpose (see this thread).

There is a PropertyCaseDump lua script that will dump out current values to a file, and also print out differences compared with a previous dump.

There is a feature added by PlasmaHH (see this changeset) which shows changes in Property Cases. Usage:

  • go to debug menu, go to "ALT +/- debug action", set to "CmpProps?" (Compare propcases)
  • then in alt-mode, press the +/- button to initialize it (all current propcases are then saved)
  • then after you made changes in the camera (canon menu) you enter alt-mode, press +/- button - you will see all the props that have changed, until you exit alt-mode
  • if there are more than 12 changed propcases, after 15 seconds it will show the next entries. this is not convenient, but i couldnt come up with a better way for now. On the other hand: it's not clever changing so many things at once (in-camera) to find out propcases. one at a time is the better solution.

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