Hi Daniel , not really , MINI produces very much data for thr size of your object , and any difference in distances even slightly will show up while merging objects at that size.
The more points usually is a junk data , overlapped points and sometimes noises , mostly half of it is not usable , the scanner actually need minimal 12 frames for one 360 rotation to construct an object nit 360 frames or 2000K , so all the extras do not helps .
of course since the Algorithms removing the extra junk and overlapped points while fusing , leaving the most important frames that are needed , fusing is resolution ( Not volume accuracy ) and most of the objects people scanning don’t need 0.02mm accuracy , 90% of them don’t
it is like you trying to take a picture of your object with a microscope when you need just a simple phone .
The Advanced fusion is very powerful yet producing simple results and my favorite Algorithms since Handy Scan , it was later replaced with Standard Algorithms what was not always my to go option , so it is great to see it coming back again .
It don’t change the object volume only the top surface , Imagine a you scanned a smooth sphere , it will not change if you used 0.02mm or 0.1mm , however if you scanned a sphere with engraved details , the details may get slightly smoother if you fuse at large pitch point above 0.1mm but only if the object have truly details at 0.02mm … so to have the perfect settings you need to evaluate the object details , to determine if you really need 0.02mm or 0.2mm , are you going to print it at higher resolution , use higher pitch point , if you for plan to print it at 0.6mm, fuse it at 0.6mm
Please remember that you cant see 2 objects next to each other with the wide of 0.02mm with your naked eye , 0.04mm yes like for example 2 human hair at the distance of 15cm , so MINI is slightly better than human eye at 15 cm .
For that reason using maximum resolution not always creates the desired results , and as in your case where the object is long , a slightly difference in distance will change the resolution that is captured that why you have difference while merging , but when you reduce the resolution to 0.1mm then the level of details ( resolution ) is equal for both scans .
MINI was created to scan very small objects , best when used with turntable , at proper distance of 15-20 cm Max . So if your object is more than 15 cm you will get different resolution in details , imagine you projecting a image with a projector on your object … it will be not everywhere perfect picture , it will depends of a angle you are projecting , if the angle is wrong , you get less details while scanning .
But I think with extra practice you going to master it for your needs as you doing good job already … I don’t know if you got the POP3 already or not but it going to be perfect tool for you needs, and you can keep MINI for a very MINI objects 