hello dear friends,
i make the follow steps in corel draw x8 :
1. i make a page 20x20 cm
2. i draw a square 20x20 cm
3. the adove file ...publish to pdf (editing format with crop marks)
4. finally import the above pdf file to a blank new page 20x20 cm.
The result is that the imported square is 20x20 cm but the crop marks ''cuts'' bigger dimensions from 20x20 (aproxx 20.16 x 20.16 cm).
Why??
Thank you in advance for your help
thanasis A.
Greece
David Milisock said:Rounding errors, they exist two different ways, one in CorelDRAW and one in Illustrator. To totally eliminate the this applications would need to reduce to a single measurement standard or set all import/export functions to be multifunctional but to only use the document measurement standard no conversions.
In both of the cases above, no inherent "rounding error" is apparent at anything like the level seen with the crop marks generated by CorelDraw through "publish to PDF".
I would guess that CorelDraw is doing something sloppy with the crop marks, carrying out a significantly-rougher-than-necessary rounding - like, to an integer number of points - somewhere in the process of creating them during "publish to PDF".
David Milisock said:I never use crop marks but see rounding errors in PitStop with PDF files from various sources.
OK, to be clear, I never stated anything along the lines of, "Using program/workflow XYZ, there are absolutely no rounding errors when producing PDF files".
This thread started with observations by Thanasis about crop marks produced by CorelDraw's "publish to PDF" being less right than one might expect.
I looked at it, and I confirmed that observation.
I also observed that the errors I see in crop mark placement produced by CorelDraw's "publish to PDF" are significantly larger than those I observe when either
Yep that's about right but we see minute changes in sizes on the prepress equipment. some are dead on others are not. I use bleed sized PDF files only just for that reason. If you create PDF files for placement you may or may not see minute differences in physical dimensions.