Its the fine SMD 0.5mm micro's I have trouble with.
OK, if you are doing 0.5mm lead pitch, forget those visors, eyeglasses, etc. You NEED a stereo zoom microscope.
If you wear glasses, take them OFF when using the micorscope. You will have to adjust the diopter compensation on
one of the eyepieces to get a stereo image that merges, but the field of view becomes at least twice as large.
Also, for any soldering microscope, you want one with an absolute minimum of 100 mm working distance, and 150 mm is
better. That gives you plenty of room to get your hands and soldering iron below the scope.
I use a flip-down visor for some low-tech soldering jobs where I just need a little enlargement. But, when doing almost any type of
SMT work, I go to the microscope. I hand-soldered at least 1000 0.4mm pitch TQFP-128 parts on one project, and could not have
done it at all without the scope.
Jon