I almost never use my microscope for soldering. TQFP, QFN, SOIC, MSOP etc just have a decent soldering iron and the correct tip for the job.
For soldering for example a msop or tqfp just use decent flux and the drag soldering method works every time. The only time i really use my microscope is to look if there is enough solder on a pin and if there are shorts at those fine pitch chips.