PowerShot A720 IS[]
CHDK is available for the A720IS with firmware version 1.00C from the Download page |
Reviews and Specifications[]
Technical Data[]
Release date: | August 2007 |
Sensor CCD size: | 8.0 MP 1/2.5" |
Lens (35mm equiv) zoom | 35-210, 6x |
LCD size | 2.5" fixed |
Card | SD / SDHC / MMC |
Size (mm) | 96.5 x 66.0 x 43.2 |
Weight (body) | 200 g |
Firmware Information[]
Firmware information is given if a file named ver.req exists on the SD.
- (vers.req reveals Total Shots instead of IS Version)
In PLAY mode (with ver.req)
- First hold FUNCSET and press DISP :
Canon PowerShot A720 IS P-ID:315D PAL D Firmware Ver GM1.00C E18 Jul 5 2007 11:32:58
- Second press of DISP (while still holding FUNCSET) reveals:
Adj Ver.012.006 ZoomLensError 2007.10.22 00:41:26
- Third press of DISP (while still holding FUNCSET) reveals:
Adj Ver.012.006 IS Firm Ver. 3.00 IS Param Ver. 3.11
Other Firmware information is given if a file named vers.req exists on the SD.
In PLAY mode (with ver.req)
- First hold FUNCSET and press DISP :
Canon PowerShot A720 IS P-ID:315D PAL D Firmware Ver GM1.00C E18 Jul 5 2007 11:32:58
- Second press of DISP (while still holding FUNCSET) reveals:
Adj Ver.012.006 ZoomLensError 2007.10.22 00:41:26
- Third press of DISP (while still holding FUNCSET) reveals:
Adj Ver.012.006 Total Shoot : Open Shoot : Closed Shoot :
CHDK specialities[]
- Since CHDK changeset #919 the <Alt> button can be set to PRINT (default) or DISPLAY from the "Miscellaneous stuff" / "<ALT> mode button" CHDK menu
- If DISPLAY is selected for <Alt> button: press DISPLAY quickly it will act as your <ALT> mode button, but if you hold it down for a second, it acts like the DISPLAY button normally does
For Developers[]
Inside this decent camera, the OS is the new DryOS, see also DryOS Porting.
Firmware dumps[]
- FW 1.00C (blinked out in 2007)
Download location for firmware dumps: |
LED memory addresses[]
#define AF 0xC02200c0 // AF-Beam (red) #define DP 0xC02200c4 // direct-print (blue) #define OR 0xC02200c8 // orange state-led (bi-state with green) #define GR 0xC02200cc // green state-led (bi-state with orange) #define YE 0xC02200d0 // Yellow state-led #define PW 0xC02200d4 // Power (green)
Porting status (outdated)[]
ā porting the A720 is completed.
Canon switched the OS from VxWorks (used on earlier cams) to their own DRYOS with the A720. That means that a lot of reverse engineering was done to find out how to hook an extension like CHDK into the A720. See dpreview-posting and Canon page on DRYOS
Most of the porting work is nearly done now!
A complete port is finished. (A long time ago) Only few features are missing,? such as
usb-support for remote shooting- works now.- long filename support in filemanager
You need to:
- Download Latest CHDK build for the A720 from http://mighty-hoernsche.de/
- Enable bootdisk-support, see Bootable SD card and/or http://chdk.setepontos.com/index.php/topic,234.msg2508.html#msg2508
- To use CHDK with SDHC see here http://chdk.setepontos.com/index.php/topic,255.msg13984.html#msg13984
The dcraw beginning with version 8.82 supports RAW format for A720 IS.
Edited 21/05/09