Re: [gphoto-devel] Olympus C-3000Z (3 Mpixel 3x zoom)

[Till K. <til...@gm...>]

Patrick Mansfield wrote:
> 
> Note there is an "extended protocol" that I've never been able to fully
> decode, see the link at the end of this nice page (page pretty much
> describes the protocol we use in sierra gphoto2 driver):
> 
> http://photopc.sourceforge.net/protocol.html#APPB
> 
> Links to here:
> 
> http://vyskocil.free.fr/coolcom/MC-EU1%20Protocol.txt
> 
> If you or anyone figures out anything, let us know.
>

Thank you for the links, looks interesting.

>>If I change the white balance setting on the camera before connecting it 
>>to the PC, I see the changed setting in correctly read by libgphoto2 in 
>>the GTKam menu. Also an exposure correction set on the camera is read 
>>correctly into the GTKam menu, I only cannot set the exposure correction 
>>or the white balance with GTKam.
> 
> 
> Works ok (register 20) on my cp880.
> 
> Check logs with --debug on, and see if you still get the unexpected 0x18.
>

I didn´t find anything wron or interesting, here is the debug log of GTKam:

http://www.linuxprinting.org/till/tmp/Olympus-C-3000Z-sierra-white_balance-log.txt.bz2

I started GTKam, auto-detected the camera, entered the "Preferences" 
dialog, changed the white balance from "Tungsten" to "Daylight". Camera 
set to aperture priority before connecting. After connecting the white 
balance was still on "Tungsten".

> 
> I could not find any change in any registers on my cp880 for manual focus,
> and can't help with the setting. It is possible (likely?) that this works
> with the extended protocol.
>

As one can simulate button presses with the extended protocol, one could 
probably simulate the needed squence <OK>, <Right>, <Up>/<Down>, <OK> to 
do manual focus.

> 
>>Wrong Aperture values
>>---------------------
>>
>>When I set the apertures as shown in the upper line, the EXIF data of 
>>the photos tells me that the aperture was as in the lower line:
>>
>>menu  1.8 2.0 2.3 2.6 2.8 3.2 3.6 4.0 4.5 5.0 5.6 6.3 7.0  8.0  9.0 10.0
>>cam   2.2 2.5 2.8 3.2 3.6 4.0 4.5 5.0 5.6 6.3 7.0 8.0 9.0 10.0 11.0  2.0
> 
> 
> Are you building from CVS? I can add an entry for the C-3000Z and see if
> it lines these up correctly for you (you'd have to specify your model like
> you had done before).
>

Yes, I test the CVS sometimes, would be great if you correct this for 
the C-3000Z entry.

>>
>>Shutter speed
>>-------------

> On my cp880, if I set it to an unsupported value, it had no affect. Also,
> I have to put my camera in manual mode (via dial) for the shutter
> to have any affect - and I also have to do this before connecting the
> camera to the computer.
> 
> Did you try setting it to values supported by your camera? Is the camera
> in "manual" mode or such when you try to set shutter speed?

Yes, I had the camera in manual mode and I have used supported speeds, 
the chosen speed even appeared in the EXIF data, but the shutter speed 
actually used was much shorter (probably never longer than one second).

    Till