I was wondering what the differences between Polaroid 669 and 690 was. I've shot a few 669 polaroids, but never 690. I found the colors not too accurate with the 669 film. I'm mainly interested in using these films for image transfers. Good color reproduction would be nice, but not crucial.
Also, while I'm asking, how long do you usually develop your polaroids when doing image transfers?
The particular instants films that I will be using are:
Polaroid 667, 669 and 690
Fujifilm FP-100C (I read on a flickr thread to develop for 20 seconds. Any other suggestions?)
Lastly, I would appreciate any advice or tips when doing an image transfer. It seems like Arches 88 is a paper that some people like to use (at least thats what I gained from the flickr thread I read through). Either Arches 88 or watercolor paper that has not been sized. Are there any other techniques that might be useful to know? Also, whats a good way to coat these image transfers so they can keep their colors and last for a few years?