See:
http://www.adorama.com/HPB60SKY.html
This explanation seems straight-forward.
Keep in mind that some of this MAY be wasted on print film and high street processing shops
Or am I teaching my granny to suck eggs?
Cheers, Bob.
http://www.adorama.com/HPB60SKY.html
This explanation seems straight-forward.
Keep in mind that some of this MAY be wasted on print film and high street processing shops

Or am I teaching my granny to suck eggs?

Cheers, Bob.