But if you do not cancel out the vibration from the start, the "soft coupling" by a bellows would allow the optical axes of microscope amd camera to move, even tilt against each other. This would be no good either.
Then rather couple all sturdily to each other.
Or have I got it wrong?
I would suspect that this the only way to achieve maximum quality.
From my extensive tests done on small repro stand and large more stable repro stand at magnifications 1-5x life size, there is a big difference when it comes to the end result.
On small repro stand longer lenses and higher magnifications gave progressively worse results since it was wobbling more.
On large repro stand there were no longer issues and big differences between different lenses. There was still some motion blurring observed in images.
Resulting image was more directly related to the lens quality with more stable platform.
Digital camera on live view and magnification easily displayed that even more stable stand isn't stable enough.
Basically, If I want to improve my results, even more stable repro stand is required before looking for better lens.
With microscope attached cameras, magnifications are much higher than this and microscope can't support camera screwed in small adapter properly.
All should be placed on stable repro stand if microscope is mobile. If it's larger microscope, it might be able to support camera through the adapter.
On top of this there is also and issue with parallelism to the image plane. If either one of the adapters is not perfect, camera is tilted.
With precision level or other alignment device this can be adjusted if camera is decoupled from microscope.