Wow, 12800 ISO? I have never ventured that high. That Sony A7s looks like a nice body to go that high on ISO.Hello many thanks for all your comments, I'm reading all of them and much appreciate.
I forgot to add some background history here.
I was planning that day to make some 30 light frames for stacking but weather did no allow :-(, I got only 2 to 3 shots more or less Ok. So no calibration frames were used. The photos are made up of 2 single shots stitched. Exif : 12,800 ISO / F2.8 / 10s. Camera Sony A7s with Sony FE 28mm F2.
The tree has died and fallen apart since. So I won't be able to do this shot again. SO sad !
Remember that you can download this photo as mobile wallpaper or in HD using the link above.
P.S The song in the video : it's me playing and is my own composition