I'm using CS3 on Windows XP.
I can't work out why some of my A4 documents (210mm x 297mm at 300dpi) are at pixel size 3600 x 8910 (using about 160M) and others are at 2480 x 3508 (using 33M).
They're all in CMYK and use 8 Bit/Channel.
I can't find any way of reducing the pixel amount in the larger files, and subsequently the memory used.
What am I missing?
Thanks,
Ryan.
#1
at pixel size 3600 x 8910 (using about 160M) and others are at 2480 x 3508
because the 2 different size images are at different resolutions, if they both print out the same size.
here's the 1st one:
<
http://www.pixentral.com/show.php?picture=1t36dgJQfuklllXCdp zFnaKq3DAk0>
here's the 2nd:
<
http://www.pixentral.com/show.php?picture=1VinaJ8frxQvTBCWxQ GCucdKOao7H>
see the diff in mm in the screen shots? my guess is, if they BOTH print out at 210mm x 297mm, then the 1st one is set for 300ppi, and the 2nd one is set for something else.
open one of each, hit image> image size, and check the resolution box.
#2
#3
to get the 2480 x 3508 image to print at 210mm x 297mm the ppi would be set to: ~300ppi.
to get the 3600 x 8910 to print at 210mm x 297mm the ppi would be set to (checking...) well, something else. that pixel dimension won't lead to a 210mm x 297mm at any resolution without distorting the image. :)
#4
and sorry, i'm trying to think in mm instead of inches. ;)
maybe i'm missing something, what do you mean by "using about 160M" and "33M"
#5
Cheers for replying.
Your reply has helped me spot the problem - as I was checking the dimensions I noticed that the error was that one of my documents was at 300 pixels/inch and the other was 300 pixels/cm (putting it at 762dpi!)
No wonder it was at 160 meg!
Cheers again. :)
#6
cool. i knew i wasn't hitting it exactly, but i was hoping you would spot it!
762dpi!
yes, that's what i was seeing (well, ppi is the correct term, not dpi, that's a printing term ;)), but i didn't think that could be right! :)
cheers back at you!
dave
#7
Thanks Dave, that was really helpful!
#8
:)
#9