Re: Using gphoto2 for eclipse photography with Canon liveview and mirror lock

CLI (or sh from a program) commands requires everything in a single command, 
with no interactivity (gphoto requires with a single command to leave the 
camera ready for the next use). A more advanced mode is the shell. In a 
console, run 

gphoto2 --shell 

inside the shell mode of gphoto, set the mirror lock with something like
-> set-config eosviewfinder=1
and capture multiple previews
-> capture-preview
-> capture-preview
...
Then go back to 0 to move down the mirror and exit the shell mode.

In my 40D I can control everything with mirror lock up: zoom in live view 
(values 1 and 5), zoom position (x, y), focus (with set-config-index), ... The 
special shell mode of gphoto2 can be controled from code, but I have no idea 
about how to implement that in python. But in Java I have a complete GUI in a 
free app for astrophoto, not fully finished, at 
http://conga.oan.es/~alonso/doku.php?id=jparsec#installing_only_clearsky. If 
you try it and works for you, the app allows to do scripting with very 
simplified commands, changing ISO or whatever. The program has a 'DEBUG' flag 
that when enabled will write all gphoto commands to the console, so you can 
see what is going on. My real use case is with a mini stick pc running Linux, 
connected directly with USB to the camera and controled with wifi from my 
Android phone using a VNC client. Stability of gphoto is fantastic, and is 
just great to do astrophoto with the phone and no cables! But I still need a 
faster stick, live mode is limited to 1-2 fps ...

Tomas.

El Lunes, 19 de junio de 2017 04:51:45 Hooked on Astronomy escribió:
> Hi Tomas,
> 
> Re: "The shell mode of gphoto2 is exactly what you need. I use it from a
> Java
> program, allowing to do things like focus while in live view, very useful
> for
> astrophoto. Just investigate how to use shell mode from python. "
> 
> I'm using sh in Python to issue gphoto2 CLI commands.  That works well apart
> from the problems I am having with Canon mirror lock.  There are several
> other ways in Python to invoke CLI commands that I can try, but I suspect
> my problem with mirror lock may be deeper than that as I can successfully
> use sh to change the shutter speed, iso and take images.
> 
> Gavin
> 
> 
> 
> --
> View this message in context:
> http://gphoto-software.10949.n7.nabble.com/Using-gphoto2-for-eclipse-photog
> raphy-with-Canon-liveview-and-mirror-lock-tp16746p16749.html Sent from the
> gphoto-user mailing list archive at Nabble.com.
> 
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