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A720IS

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PowerShot A720 IS Edit

Notice

CHDK is available for the A720IS with firmware version 1.00C from the Download page


20070820 loRes a720is front

Powershot A720 IS Front

20070820 loRes a720is back

Powershot A720 IS Back

Reviews and Specifications Edit

Technical Data Edit

Release date:August 2007
Sensor CCD size:8.0 MP 1/2.5"
Lens (35mm equiv) zoom35-210, 6x
LCD size2.5" fixed
CardSD / SDHC / MMC
Size (mm)96.5 x 66.0 x 43.2
Weight (body)200 g

Firmware Information Edit

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 Edit

  • 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 Edit

Inside this decent camera, the OS is the new DryOS, see also DryOS Porting.

Firmware dumps Edit

  • FW 1.00C (blinked out in 2007)
Saveas64

Download location for firmware dumps:
P&S firmware dumps mirror

LED memory addresses Edit

 #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) Edit

→ 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:

The dcraw beginning with version 8.82 supports RAW format for A720 IS.

Edited 21/05/09

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