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Twain support

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Offline user11

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Twain support
« on: 11 / December / 2008, 01:55:49 »
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Is it possible to have twain support for Canon Powershot?
I'd like to be able to take pictures with my camera which is connected to my PC and get them into my program automatically.

Thanks in advance.
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Offline whim

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Re: Twain support
« Reply #1 on: 11 / December / 2008, 03:15:22 »
Welcome to the forum !

Sorry, that's currently not possible with CHDK and it's not sure that it ever will be ...

Read here: Remote Capture (PTP) using USB for canon cameras that don't normally allow it

edit: you could try some of the programs mentioned here: FAQ - CHDK Wiki to see if they can help you do what you want;
please note: while USB remote feature is enabled (in CHDK menu), camera will not be recognized by the PC...

wim

BTW Forum has pretty good search facilities... found this link by typing 'USB' in search box (top right of page)  ;)
« Last Edit: 11 / December / 2008, 04:17:10 by whim »
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Offline dzsemx

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Re: Twain support
« Reply #2 on: 11 / December / 2008, 06:56:22 »
edit: WIA devices are for shooting remotely/webcam video  :D

not possible yet, it's very very very very very very very very very very very very very very complicated
it has been requested by a few hundred times, and everybody would like to use the cameras as twain wia device especially as webcam

« Last Edit: 12 / December / 2008, 00:53:53 by dzsemx »
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Offline fe50

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Re: Twain support
« Reply #3 on: 11 / December / 2008, 07:45:01 »
Quote from: user11 on 11 / December / 2008, 01:55:49
Is it possible to have twain support for Canon Powershot?
I'd like to be able to take pictures with my camera which is connected to my PC and get them into my program automatically.

TWAIN (=software interface) support is build-in in most Canon cameras, if you want to upload images via USB on Windows 2000 the TWAIN software interface is the only way. On the camera's download page Canon offers TWAIN drivers for Windows 2000 for some cameras.
Since Windows XP this is obsolete, now other transfer methods like PTP or WIA are used.

But: this is only for uploading images/data 'offline', normally the camera must be in playback mode for this, it is comparable to transfering pictures via USB with Windows XP.

It is NOT possible to control the camera via TWAIN, no remote capturing etc.!

Maybe the WIA Interface on Windows XP or higher could help you, you should have a look to the SDM (Stereo DataMaker), SDM: Image uploading and WIA loader.
Another option is the Eye-Fi wireless lan SD card, search here in the forum for 'Eye-fi' for more informations...
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Offline pizzicat

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Re: Twain support
« Reply #4 on: 07 / January / 2009, 08:57:41 »
Functions and abilities of inPhoto Capture TWAIN driver
Quote
inPhoto Capture software: stand alone / TWAIN driver for Canon camera control
commercial product
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