I need to create a poster for a conference. Which is the best image format that I should save my image file as for highest quality printing? I am using Mathematica on Ubuntu 10.10 to generate these images.
Short version: Export to a format that supports CMYK colorspace and maintains image fidelity. In order of preference:
Explanation: There are two factors to consider for high quality printing:
Ideally, you should export as a vector format in CMYK colorspace. Mathematica supports EPS export:
In addition to infinite resolution, the file size should stay relatively small.
However, one disadvantage of vector file formats is text in non-standard fonts is often rendered incorrectly. In this case, it may be simpler to export a raster (bitmap) image. I suggest the TIFF format:
Make sure to use at least 300 DPI. Depending on the physical size of your poster, this could require a HUGE file.
I do not recommend:
Since you generate your graphic which Mathematica I assume we are speaking of vectorial graphics. In this case keep it in a vectorial format and it will properly rendered at the right size and resolution when inserted in the poster. Both PDF and EPS will do the job.