Hi there,

Having just started my journey into Instant 8x10, I learned that B&W Instant film (notably PX Film from Polaroid Originals) will turn Sepia after some time. The clip below (1:45) notes that this can be prevented by peeling the positive away from the negative after development.

https://youtu.be/zgv7VwkeluA

Can anyone provide further information on this process? Books? Links? Videos?

I have a personal project in mind, and would like to ensure images do not turn sepia over time.

Thanks in advance!
André