[Gimp-user] New image too large?

Hello. I have only just installed Gimp and the first thing that
happens is when I try to open a new image at say, 24 inches x 20
inches with a resolution of 300ppi is get a message saying ' You are
trying to create an image with a size of 1.6 Gb' and goes on to tell
me that this image size exceeds the maximum allowable. I can't work
out how a blank image area of these dimensions amounts to anything
bigger than about 123Mb., as the same space shows up as in Photoshop.
Am I doing something wrong here?

It is because the image in Gimp memory is more than just the bare RGB (3 x 8
bit) value for the number of pixels. There is an undo stack , channels..etc 
even with a newly opened image. Similar sort of discussion here:


The warning is just advice, you could adjust the limit in preferences (I just
ignore it)

rich404 (via www.gimpusers.com/forums)

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