viewing DNG files in Windows 7 removable storge (i.e. camera) - General Help and Assistance on using CHDK stable releases - CHDK Forum
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viewing DNG files in Windows 7 removable storge (i.e. camera)

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Offline shinnen

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viewing DNG files in Windows 7 removable storge (i.e. camera)
« on: 19 / October / 2018, 19:09:25 »
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Hi,
     I'm in the habit of downloading my pictures directly from the camera (SX100), without removing the sd card. This has worked well until I took some raw images, which do not show up in windows explorer. (The jpgs show fine.) I suspect that this is not a CHDK problem; but I was wondering if anyone knows how I can do this, without taking the card out of the camera?
Thanks,
... john
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Offline waterwingz

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Re: viewing DNG files in Windows 7 removable storge (i.e. camera)
« Reply #1 on: 19 / October / 2018, 19:45:23 »
Nothing new here - and you are right that it's not really a CHDK problem.  The file extension used for the image file is not something always recognized by your Windows software.

Your first option is to change the file extension used to save your RAW images on the SD card to something recognized - the CHDK menus let you pick from several options, one or more of which might work.

Otherwise, software like chdkptp can be used to download any image files. But you need to set that up as a separate step.


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Offline waterwingz

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Re: viewing DNG files in Windows 7 removable storge (i.e. camera)
« Reply #2 on: 19 / October / 2018, 20:02:07 »
Also, CHDK allows its RAW images to be stored in a number of different places. Only one of which is the same folder as your JPG files. Again, it's an option in the CHDK menu.


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Offline reyalp

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Re: viewing DNG files in Windows 7 removable storge (i.e. camera)
« Reply #3 on: 20 / October / 2018, 17:00:32 »
Quote from: waterwingz on 19 / October / 2018, 19:45:23
Your first option is to change the file extension used to save your RAW images on the SD card to something recognized - the CHDK menus let you pick from several options, one or more of which might work.
To expand on this slightly for @shinnen
The Canon firmware doesn't recognize the DNG extension. If you turn off the "'DNG' file extension" and choose prefix / extension it recognizes, you may find a combination of prefix/extension which allows you to download CHDK raw files. I'd suggest CRW_ and .CR2. Some combinations may confuse the camera and/or windows.

The files will still be in DNG format as long as the "DNG format" option is checked, but because the extension is different, some windows software may not open it correctly.

One final caveat is that that CHDK raw files will probably not be visible on the PC unless the camera is restarted between shooting the pictures and connecting the USB cable.

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Otherwise, software like chdkptp can be used to download any image files. But you need to set that up as a separate step.
One downside of this is that the libusb driver disables normal Windows access to the camera, so if you like to plug in your camera and have some windows software automagically do its thing, it will no longer work. The libusb driver can easily be removed using device manager.

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Offline shinnen

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Re: viewing DNG files in Windows 7 removable storge (i.e. camera)
« Reply #4 on: 20 / October / 2018, 23:27:12 »
Quote from: waterwingz on 19 / October / 2018, 20:02:07
Also, CHDK allows its RAW images to be stored in a number of different places. Only one of which is the same folder as your JPG files. Again, it's an option in the CHDK menu.
Thanks. I'll check those options out.
..... john
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