>>3411282I know a lot of entomologists who do their field shots without a tent, but with focus stacking. It's possible, especially if you use a flash.
>>3411293At NHRS the setup uses a Stackshot motor, on which some Canon with the MP-E is mounted.
I'm not sure how focus stacking was exactly done at
>>3411175 but as far as I remember, there was the option to choose how many mm were to be in focus.
There are also manual focus rails for this, but I guess the automated version works more precise. Images are later combined with either Zerene Stacker, or Helicon Focus.