In case this is of help to someone:

The problem was that support for Optura 20 has been foobarred from
version 2.1.6 of gphoto2 onwards. Somebody mistakenly told the gphoto2
developers that the vendor/product ID pair for this camera was wrong, and
they changed it accordingly. Patching the canon.c file in the gphoto2
sources appropriately fixes this.



On Sun, 12 Nov 2006 23:11:17 +0000, Frank W. Steiner wrote:

> I have connected my Canon Optura 20 to the USB ports on my Linux box, and
> the camera seems to be recognized all right, as far as the USB interface
> is concerned. The output from lsusb is
>
> Bus 005 Device 002: ID 04a9:307f Canon, Inc. Optura 20 Bus 005 Device 001:
> ID 0000:0000
> Bus 004 Device 001: ID 0000:0000
> Bus 003 Device 001: ID 0000:0000
> Bus 002 Device 002: ID 03f0:7504 Hewlett-Packard Bus 002 Device 001: ID
> 0000:0000
> Bus 001 Device 001: ID 0000:0000
>
> whereas that from cat /proc/bus/usb/devices is (I am including the
> relevant portion only):
>
> T: Bus=05 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver=
> 1.10 Cls=ff(vend.) Sub=ff Prot=ff MxPS= 8 #Cfgs= 1 P: Vendor=04a9
> ProdID=307f Rev= 0.01 S: Manufacturer=CANON Inc.
> S: Product=Canon DVC
> C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3
> Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=82(I) Atr=02(Bulk) MxPS=
> 64 Ivl=0ms E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=83(I)
> Atr=03(Int.) MxPS= 8 Ivl=96ms
>
> The output from gphoto2 --list-ports is
>
> Devices found: 3
> Path Description
> -------------------------------------------------------------- usb:
> Universal Serial Bus usb:005,002
> Universal Serial Bus usb:002,002 Universal Serial Bus
>
> However, gphoto2 --auto-detect completely fails to detect the camera,
> despite of the fact that it does support it.
>
> What am I missing?