Originally posted by virusn3t Ok... digital era guy here, the only rolls of film that i used was the ones from the cheap kodak camera my mother use to have... I was on believing (until i read this thread) that every film was treated the same (generaly speaking, wiyh diferent process on BW and color film) but i must ask something this diferent films are diferent pshysicaly to make easy to know which is which? If you gave me this diferents rolls i pretty much will think both must be worked the same...
In 35mm there is a bar code on most cassettes indicating film type for the commercial processor.
But c41 the colour negative is (was) generic, it was a Kodak standard.
Ditto E6 the colour positive (slide) film.
Monochrome was not generic except for c41 film types that needed the colour negative process.
The cine colour negative (ECN) is generic, people buy 400 foot rolls and load it in stills.
In roll and flat film you can still get these types cept for the ECN, and you need to read the label, on the roll, or light tight box.
The processing staff may have been dragged off the street, press gang style!
The OP is entitled to money back, but he still has the shots as E6 and c41 are 'compatible' by magic!
Memory cards come in different sizes and speeds?