>>4314420If only I had shown examples and listed reasons with the post where I stated I shot Portra 800 @ 50, -2.
Pulling, provided you compensate the exposure properly, reduces contrast and some people believe it also reduces grain.
Pushing, let's you use the film for darker scenes, where you compensate for the lack of light with increased development time and temperature at the cost of more contrast and often times more defined grain.