You should not re-level your panohead for the following reason.
Agnos heads have the bubble level built into the actual panohead that rotates with the panohead hardware. (Independent of the tripod or tilt leveller) Once it is levelled at position (1) 0-360 mark the correct level has been obtained for the complete shooting of the panorama series of shots. The bubble level "may" move from it's centre position when moved to the next click stop and consequent click stops but once you return to position (1) 0.360 the level is still 100% correct. What you are seeing with the bubble moving from the centre position is the slight inaccuracy in the hardware. This is so slight that the human eye cannot see this and even less so within the panorama image. (you cannot see it, it is impossible)
If you re-level you are creating misalignments everytime you re-level as these shots are not taken as a set but as individual shots. This will cause errors in stitching and is why you need to use "matching points" I don't ever need to use these when I stitch with Panoweaver 4.0.
What I'm stating here is clearly stated in the Agnos Mrotator instruction manual. (Page 6)
Making re-levelling adjustments, will not cause a non stitch-able panorama. Because typically you are only making ever so slight adjustments. But you are kidding yourself if you think it is helping your stitching. It simply doesn't make sense and will cause stitching misalignments.
Imagine this, you are on a rotating turntable (levelled at position 1) with a video camera on a tripod. (This could be a childs Round-a-Bout in a park) You record while in rotation without re-levelling at "any" point or degree. You play it back and all looks as it should. Nice smooth and seamless in motion.
Now, imagine the same video footage if you re-levelled at every corresponding click spot position whilst all the time recording (even if the re-levelling was instant) your video would jump. Correct?
I hope this sheds some light on why you shouldn't re-level when shooting in rotation.
All of this is not to say you shouldn't make 100% sure your tripod is level BEFORE you level your panohead at the 0-360 number (1) position first.
Regards, Smooth
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