ive been creating artwork at true size @ 150dpi in photoshop
Image size is measured in pixels. For example: an image 1500 x 1500 pixels would print at 10"x10" at 150ppi or 5"x5" at 300ppi or 15"x15" at 100ppi.
You need to find out what resolution the RIP is expecting. Be careful not to confuse ppi (image resolution) with dpi (the number of dots per inch the printer lays down on paper)
By preparing your files at the required size, and at the correct number of pixels per inch, you should have no problems obtaining the correct size print-out.
ive then been saving it as a jpeg
Using what steps?
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Regards
John Waller
"By preparing your files at the required size, and at the correct number of pixels per inch, you should have no problems obtaining the correct size print-out"
thats what i thought. this is how i would start…
file > new > enter image size required in mm > check dpi @ 150 for print > create file
and yet when i file > save > save as jpeg, the image opens huge in the rip software?
As you saving the Jpegs as "Standard Baseline" or "Optimised"?
"Optimised" strips out certain bits of metadata. I can’t be sure, but this might include the resolution tag (ppi). This being the case, your printer might be defaulting to some arbitrary figure.
Why are you giving them Jpegs anyway. Wouldn’t they prefer uncompressed files such as TIFF?
enter image size required in mm > check dpi @ 150 for print
Okay. Another possibility.
When you set the image size using millimeters, are you sure you are setting the resolution in "pixels per inch" and not "pixels per cm" by mistake?
im saving as "Standard Baseline"
we use jpegs to save memory. i transfer files over to print via the net so tiffs quite often come up too big.
def working in pixels per inch
bizarre
If PS is doing as it’s told whilst outputting your files, then you need to look into the possibility your RIP software has gone pear-shaped. 🙁
