I feel a wee bit guilty about starting this thread but it's not technically purely photography equipment so I didn't stick it in the sticky-thread at the top of the list. Moderators: I won't be offended if you disagree .
So here's the thing: does anyone know the difference between a regular old colour cartridge and a photo cartridge as Canon define them? I've got a Pixma MP610 and it's built and sold as a photo printer, advertised to take the regular colour ones (plus an extra black cartridge for plain old document printing).
But now I see that alongside the regular magenta (code CLI-8M) you can buy a "photomagenta" (code CLI-8PM). I can't for the life of me find out what's different (not even the price, although the compatibility list for the fancy one is shorter). And what's more puzzling is that I can only find these new versions in magenta and cyan unless I go searching abroad.
Anyone got any experience with 'em?
(P.S. I know I said that my MP610 was advertised as taking the regular flavour, but it's in the compatibility lists for the photo ones.)