If you are in manual mode and have ISO set on 100, by definition can there be no auto exposure compensation by your camera: all three exposure variables are fixed by your manual settings.
Your math is correct: if you meter 1/25sec at f/11 ISO 100, if you add 12 stops of ND the same exposure requires 164 seconds (or 2 mins 44 sec).
Are you sure you stacked the two ND filters properly?
Was your ISO fixed at 100 when you did the metering in A mode? Unlikely to be your problem as this would have caused under- instead of overexposure. Just trying to isolate your problem.
I have a Sony Zeiss lens (SAL50F14Z) that wobbles very badly. I tried to send it to Sony for repair, but the Sony repair center just sent it back and claimed that the wobble is *normal*.
I personally do not believe it is normal, as I don't recall having this wobble before, and my other Sony Zeiss lens doesn't have that.
Could the community give any recommendation what I should do?
If this is really normal, then it's a big design flaw from Sony!
Does anyone use the Sony Apps on their A7 series?
I watched a video last night with a gent shooting a landscape using an App that created an ND effect in the sky, it allowed him to adjust placement of it and also softness of edge to avoid lines - when he pressed the shutter the camera took 2 images that it then merged and saved the results as a RAW file in camera.
It looked very interesting but I would like to know if anyone on this site is using it, what they think of it and will it work with the A7iii?