The differences I see are very subtle and aren't really in the
detail: at 1440 it resolves detail better than my E-10. The
differences are in the colors. But that's not really true, because
side by side the colors look the same, they just seem stand out
more at 2880. The difference is closer to doing fine adjustment
with levels in PS, that's why I say it is the dynamic range that is
better. The other reason I say dynamic range is that I noticed the
biggest difference with Black and White.
I once asked here if anyone else saw a difference and several
people said they did but it wasn't great enough to justify the
extra time/ink to print. The reviews I've read said about the same
thing: there is a difference, but you have to decide if it's worth
it.
To me it depends on the image. I usually print one 2880 for every
thirty 1440 that I print.
One note - I shoot exclusively in raw and keep all of my images at
16 bits. Could this be the difference? I notice the difference in
prints of 8 bit versus 16 bit. Maybe it takes the 2880 to resolve
the subtle differences of 16 bit color.
I have an 890 and a 1270 (european names). I can tell no difference
between 1440 and 2880 on premium glossy and contrary to what trent
has found, all the reviews I've seen say basically there is no
discernable difference to the naked eye.
Trent, what are you doing to get the higher quality?