Marcus Meissner

it reports ptp session not opened and then an out of sync ptp transaction id. I think this probably is the gvfs gphoto2 tools already using your camera. you need...

can you first try with a more recent libgphoto2, like 2.5.27 ? (you updated only the commandline tool, not the actuial library with the drivers). I did various Canon EOS...

in which exposure mode is the camera? does it help if the dial is on Tv (Or whatever Shutterspeed prio is) does the gphoto2 commandline tool show shutterspeed and allows...

can you check gphoto2 --get-config focusmode this is the one what determines if autofocus is executed

busy being the camera display, right?

during a running "movie" / preview capture loop it is not possible with the commandline tool currently. (it would mean having some form of side channel / back channel). also...

capture-preview just takes the liveview viewfinder. you probably can do something similar to gphoto2 --set-config eosremoterelease=Immediate --set-config eosremoterelease="Release Full" --wait-event-and-download=5s this controls the shutter directly and bypasses the half-press focusing...

can you check if the setting has stuck? gphoto2 --get-config autofocus should show it to be off. If yes, can you capture a debug trace of this?

usually you do not need to mix eosremoterelease and captureimage. eosremoterelease is basically same as pressing the shutter (half / full / releasing... depending on number), a following capture-tethered or...

On Nikon... On the D80 the selectioon via "autofocus" was not yet working correctly. I have now changed the code to also honor the "autofocus" property in current libgphoto2 git...