Well, when my lab pushes this film two stops it really seems to behave like a 1600 ASA film. So if I then expose it at 800 and push two stops then I'm effectively over-exposing it given the processing regimen.
I don't know if thiis is what is really happenig chemically, all I know if that exposing at 800 and pushing two stops gives me good results. It allows me to handhold the Mamiya 6 under relatively low light conditions with the 150mm lens. The three photos I posted above were all either indoors or taken on heavily overscast/rainy days, handheld. They are SHARP.
