Feature Request/question

[jtbc...@gmail.com]

First thank you for all the work I know it has taken to create a great graphical interface to libgphoto.

Second I have written simple C/C++ code for my Astro-Photography and part of this request requires a new libgphoto command or in my current case an error handler as a work around.

I am a Nikon User by the way.

1. As a feature request to Entangle , many of the new DSLR allow USB Bulb or time exposure that allows taking greater than 30 second photos but requires sending the time. The Terminal command is:

gphoto2 --set-config bulb=1 --wait-event=Time--set-config bulb=0

Allowing me to remove my External Trigger Relay on the D850 but still required for my D90 and D7000.

2. Mirror-up, Again for long exposure, Gphoto has a Status that will tell you the mirror is up but no command that I have found to allow you to move the mirror to the up position. I read the specs on the Nikon Live view shooting but it actually makes it worse as it drops the mirror and pops it back up before capture occurs (2x the vibration). I found a work around in Gphoto that if the camera R-Dial is in Mirror-up and you send the Capture Image it moves the mirror up but returns an error :

*** Error ***              
(null)
ERROR: Could not capture image.
ERROR: Could not capture.
However if you send the capture a second time it the performs the capture without moving the mirror down first. The same can be duplicated in Entangle.

I have also reported this to Gphoto as a feature request to add something similar to the Bulb command and not report the error. A single request may not drive but a request from you side might help.

As a note I have C++ code that will operate 3 of the different CH340 USBRelays available on Amazon that includes a basic intervalometer and would be happy to give you the function for the relay (including their specific Hex control Code Files) as well as assist on the Time Lapse Photography item of the To-Do List if I can.  I will state I am not a much of a GUI programmer although attempting to learn but the general C/C++ I can do fair with for a 65 year old man. Retired so I can play a lot.

Again thanks for what you have accomplished.

James

[jtbc...@gmail.com]

I wanted to leave some addition info as I received a response that lead me to a different work around to the Mirror-Up.  By using the --trigger-capture it will raise the mirror with no error. after which sending the --capture-image or the --set-config bulb=1 --wait-event=15 --set-config bulb=0 will complete the capture.