BTW, I never got my camera to focus correctly when using a Canon lens. I activate Live View (no problem), click "focus in" and what happens is this: For a couple of seconds nothing happens at all, then I can hear the focus motor move for a fraction of a second, then several seconds of silence again before the focus motor again moves for a fraction of a second. This procedure continues for about 20s-30s and then stops. During these 20-30s the focus motor has moved about ca. 3x-5x. The log file says something like this:
[2020-06-18T00:19:25.800 CEST INFO ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[INFO] Starting the video stream with target exposure 0.100000 s (Max theoritical FPS 10) "
[2020-06-18T00:19:25.800 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting toggle widget viewfinder: 1 "
[2020-06-18T00:19:25.951 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:19:25.951 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Pixel format 100 is supported by SER recorder. "
[2020-06-18T00:19:25.951 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Pixel format 100 is supported by RAW encoder. "
[2020-06-18T00:19:42.836 CEST DEBG ][ org.kde.kstars.ekos.focus] - Focus "outward" ( 2000 )
[2020-06-18T00:19:42.836 CEST INFO ][ org.kde.kstars.ekos.focus] - "Focusing outward by 2.000 steps..."
[2020-06-18T00:19:42.836 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "Focuser is moving 2000 steps outward... "
[2020-06-18T00:19:42.886 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:43.388 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:43.902 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:44.397 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:19:44.498 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:44.998 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:45.498 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:45.998 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:46.502 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:47.498 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:48.005 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:19:48.055 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:48.563 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:49.064 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:49.557 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:50.056 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:50.656 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:51.158 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:51.668 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:52.157 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:52.657 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:53.667 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:54.161 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:54.666 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:55.174 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:55.661 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:56.661 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:57.161 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:57.661 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:58.163 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:58.683 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:19:58.734 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:19:58.841 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:19:58.895 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:19:58.994 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:59.492 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:19:59.992 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:00.507 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:00.993 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:01.995 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:02.494 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:03.005 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:20:03.070 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:20:03.166 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:20:03.218 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:20:03.318 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:03.824 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:04.322 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:04.823 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:05.332 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:06.325 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Failed to set new configuration value (camera busy), retrying... "
[2020-06-18T00:20:06.844 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:20:06.882 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:20:06.992 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 5D Mark II : "[DEBUG] Setting new configuration OK. "
[2020-06-18T00:20:06.992 CEST DEBG ][ org.kde.kstars.ekos.focus] - "Rel Focuser position changed by 2000 to 52000"
Obviously Ekos' focus routine doesn't work with my 5D Mk2/EF300(1:4) at all. However, focusing never crashed Ekos/KStars here.