I would get as much off as you can mechanically with toothpicks or similar wood or plastic probes, then follow up with a cloth or perhaps Q-Tips or more toothpicks sparingly moistened with a solvent like paint thinner.
If the finish is lacquer or shellac a petroleum a solvent like the thinner shouldn't damage it, OTH alcohol will attack shellac, and lacquer thinner will soften lacquer.
Though with either, just letting the solvent evaporate should get the finish back to where it was, assuming nothing like finger prints,dust or water (rubbing alcohol) gets in it during the process.
For get disassembling, that can get you in deep $#!+. Do what he said.
Warning!! Handling a Hasselblad can be harmful to your financial well being!
Nothing beats a great piece of glass!
I leave the digital work for the urologists and proctologists.