Again: tethering live view: detect focus and highlight it #3976

[devtribun]

I have no permission to reopen issue #3976, so I restart this request.

I'm using darktable V 5.6.0 on LMDE7, works great.

I like the liveview of my NIKON D850 in tethering mode, but I cannot see which focus-field is currently active.

I can move the focus-point in tether-mode, but there is no optical way to detect its current position. This makes it hard to focus in tether-mode, especially when taking macro-photos.

It would be a big step foreward to see the current focus-point marked clearly on the screen. And the luxury solution would be to see the available, but inactive focus-fields of the current focus-mode aswell.

So please dear developers, is there anybody out there who has a heart for the liveview feature and likes to make people happy?

Peace

[devtribun]

Here are some more information about this topic. There was a discussion about 2 years ago trying to find a solution for this feature.

Here you can follow the discussion:

https://discuss.pixls.us/t/improving-tethering-live-view-zoom-and-focus/45490

It seems to get the information about the current focus-point from gphoto2. But I'm no coder so maybe the discussion may help people with a better knowledge than I have.

I had a closer look at the variables-problem and will open another issue about this topic.

Peace