Wojciech A. Koszek
wkoszek@FreeBSD.org
2009.03.02
I use camera only for technical purposes. Mostly when I get operating system kernel to panic for some reason and it isn't possible to obtain the panic message via serial port/FireWire. I used to just copy images directly from the camera, but moving SD card in and out didn't work for me in a longer term.
This page presents how to interact with my Canon PowerShot A510 camera with gphoto2.
Once I switch my camera to viewing photos, it apears on a USB bus as USB Generic Device:
ugen0.4: <Canon Inc.> at usbus0
No further kernel-related installation is needed. gphoto2 operates on ugen(4) instance.
For the list of photos present in the camera's SD card type:
wkoszek@laptop:~# gphoto2 -L Nie ma plików w folderze '/'. Nie ma plików w folderze '/store_00010001'. Nie ma plików w folderze '/store_00010001/DCIM'. Jest 11 plików w folderze '/store_00010001/DCIM/111CANON'. #1 IMG_1166.JPG 1006 KB 2048x1536 image/jpeg #2 IMG_1167.JPG 786 KB 2048x1536 image/jpeg [..] #10 IMG_1175.JPG 884 KB 2048x1536 image/jpeg #11 IMG_1176.JPG 1136 KB 2048x1536 image/jpeg Nie ma plików w folderze '/store_00010001/MISC'. Nie ma plików w folderze '/store_80000001'.
Obtaining all photos from the camera is very easy:
wkoszek@laptop:/tmp/photo# gphoto2 -P Downloading 'IMG_1166.JPG' from folder '/store_00010001/DCIM/111CANON'... Saving file as IMG_1166.JPG Downloading 'IMG_1167.JPG' from folder '/store_00010001/DCIM/111CANON'... Saving file as IMG_1167.JPG Downloading 'IMG_1168.JPG' from folder '/store_00010001/DCIM/111CANON'... [..] Saving file as IMG_1175.JPG Downloading 'IMG_1176.JPG' from folder '/store_00010001/DCIM/111CANON'... Saving file as IMG_1176.JPG
So is obtaining miniatures:
wkoszek@laptop:/tmp/photo# gphoto2 -T Downloading 'IMG_1166.JPG' from folder '/store_00010001/DCIM/111CANON'... Saving file as thumb_IMG_1166.jpg Downloading 'IMG_1167.JPG' from folder '/store_00010001/DCIM/111CANON'... Saving file as thumb_IMG_1167.jpg [..] Downloading 'IMG_1176.JPG' from folder '/store_00010001/DCIM/111CANON'... Saving file as thumb_IMG_1176.jpg
That's it.