it is not a really having steps, but rich in tonal range, like in shadow areas is not block up, and also highlight area not white wash, still able to see detail in it.
btw, if it is stacking, it means taking a few shots of a subject. And systematically focusing on different spots of the subject. Then using software to stack the images together to achieve ultra sharp photo.
Noted. I just take the liberty to read it as an incomplete sentence - good stacking technique. There might be some communication problem of hearing or pronouncing.