Someone ask me via PM if this microscope is a good choice for soldering. I figured others might have the same question, so I'm posting my answer here.
The S8APO is a fantastic microscope; however, it is designed for tasks quite different from soldering. In the stock configuration its lowest magnification is too high (10x), its FOV (24mm) is to narrow, and its working distance (75mm) is too short. While Leica provides auxiliary lenses that can transform this scope into one suitable for soldering, I can't recommend this option because the lenses that provide a suitable working distance also significantly degrade the scope's optical performance. It seems wrong to pay for an APO scope, and then render it non-APO with an auxiliary lens!