I bought some expired E200 film (02/2002). I didn't see "Push to 800" as I see on newer E200 film packages. I am wondering if it is still pushable (to 320).
The cat no. is 128 8422. Thanks.
The original data sheet from Polaroid indicated push three would work best with an ISO setting of 1000. They later updated the data sheets to show ISO 800 instead. I managed to work out pushes and exposure compensation to 4 2/3 stops push. This film does not push in a linear manner, so exposure compensation greatly increases with each push, and the film tends to shift more blue at higher push steps; in effect this means there is less need for blue filtration at higher stops. Anyway, the simple answer to your expired film question is to shoot at ISO 320 and process as a one stop push. The biggest issue on expired film is that the colour will shift slightly, though if it has been refrigerated the colour shift will be very minor.