Hi Everybody, The subject of 1 Gbyte files is still being brought up -- along with the usual round of insults from the resident self proclaimed expert. Let's consider a final flattened file. Yes. I may make 50 layers in Photopaint but I merge them as I go along. The file that is sent to the Costco print shop may be a 7' x 10 photo.but it iis only one raster layer. This is how I go about determining the size in pixels by pixels for an RGB print of any size. 1. The starting point is 100 years of testing with magazines. It has been found after 100 years that a dpi -- actually dpi per color - does very nicely. If you want better quality, you need to use 6 and 8 color presses. Perhaps tweak the bit shape. Change the paper, etc. 2. The next step in my thinking is that the resolution of human vision does not change with distance, 3. So now, we come to a conclusion. You can take in an image on a magazine at about 1 foot. That is about 2 Mpixels. 2 Mpiixels is 6 Mbytes, THAT'S IT. END OF STORY. If the image is larger, I have to back up to take it in. So I keep the same file size because the resolution of my vision is identical at 10 feet as it is at one foot. OK. I throw in a hefty safety factor. I use 25 Mbyte files. I bring in 25 Mbyte files to COSTCO. I find the results to be more satisfactory than the usual 6" x 4" prints. So far, my clients feel the same way. WHY IN THE WORLD SHOULD THAT EVER COME CLOSE TO ONE Gbyte. Phil
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