The higher the dpi is the longer it will take to rasterize and the bigger the file size. You can’t do a thing about those rules.
That said, there’s almost no reason whatsoever to go above 300 dpi since that will give good results even on most presses.
What exactly do you want to do with the file after you’re done with it and why do you need to rasterize it?
Bob
Hi Bob,
Well, I have to increase the dpi because it’s a publishing in a newspaper and have to be a good image on that.
When I open the pdf file in the Photoshop and put a resolution about 1270 dpi, the final result of the image it’s just fine.
If I put less resolution with 300dpi the final result it’s very bad with the image completely rasterized.
I don’t have to rasterize the image, in fact, I have to do the best for the image do NOT rasterize.
Do you know others ways to do this?
Best regards,
Daniel
Do you know others ways to do this?
Any decent newspaper can accept a properly created PDF.
Bob
yea sure,
tell that to NEWSWEEK.
And since when is Newsweak a decent paper? <grin>
Daniel,
You may want to consider opening the PDF in illustrator, that way you keep the vector elements non rasterized.
And BTW, 1270 ppi sound like the necessary resolution if you have an image in bitmap mode, not in greyscale or RGB, in which case 300 should be more than enough for a newspaper.
Hi Renee
I have just made the test opening the pdf file in Illustrator but some images in the file have just disappeared.
Do you know other software that I could do this besides the Illustrator?
I don’t have to rasterize the image, in fact, I have to do the best for the image do NOT rasterize.
By opening it Photoshop you will rasterize everything. Note that imgages in the PDF that were low resolution will still appear to be low resolution images no matter what DPI you choose when opening the PDF.
Bob
Well, today I open the PDF in the Photoshop put 1270 dpi and save as EPS to make the image as good as possible, but in the other hand, this .EPS file created it’s about 150Mbytes of size.
When I open this file it take about 15 minutes to open completel! My network is 10Mbps-based!
After this, I open with Adobe Acrobat and save as EPS file with less dpi. The image becomes good but not in the quality that I have to do.
Any more ideas?
{]’s,
Daniel Resende
You’ve already gottent he best advice. Create the PDF properly and send that to the printer. There’s simply no reason to go above 300 dpi even if you do rasterize it.
Bob
Take the type from Illustrator, take the rasterized (300 ppi) images form Photoshop and redo the layout.
Daniel,
it´s still not clear why this PDF had to be rastered by PhS. The text is probably vector. If the image quality is bad then you can copy the image (full version Acrobat), improve it by PhS and paste (back).
Best regards –Gernot Hoffmann
"You’ve already gottent he best advice. Create the PDF properly and send that to the printer. There’s simply no reason to go above 300 dpi even if you do rasterize it."
I can’t create the PDF file because is already created and I can’t change any item in the image. In fact, I use the QuarkXpress 3.32 and the image will be put in a page with others images, that’s why I have to open in Photoshop e save as EPS.
The QuarkXpress can not insert images with PDF format.
"Take the type from Illustrator, take the rasterized (300 ppi) images form Photoshop and redo the layout. "
I do that, but the image is all distorced or some itens becomes desconfigured. I do not have time to fix it all the itens in the image.
"If the image quality is bad then
you can copy the image (full version Acrobat), improve it by PhS and paste (back). "
Sorry my ignorance, but how exactly do I do that?
And thanks to all that are help me.
Daniel,
how to edit images in PDFs is explained here by Lyn Eggleston: Lyn Eggleston "How do I Edit an existing PDF file in PM6.5 ?" 1/13/04 7:39am </cgi-bin/webx?13/10>
You can convert PDF to PostScript as PS or EPS (save as). This might be helpful if Quark can´t place PDF.
I´m doing often conversions PDF(5.0 compatibility)–>PS–>PDF(3.0).
Best regards –Gernot Hoffmann
Gernot,
I can`t do the edit in the Acrobat 5, because I don`t have the Touch up object tool.
How do I use this tool in Acrobat? Couldn`t I edit the file because it`s maybe closed or has something else?
Thanks for any extra helps,
Daniel
Daniel,
completely rasterized
That and the fact that you have it rezzed up to 1200+ ppi gives me the idea that you confuse rastering with moire.
Rob
Thanks Rob, but it isn`t moire at all.
Because the Quark 3.32 can`t import PDF file in to a page in QXD as a image, I have to save the image as EPS or TIFF to make the import occurs with no problems.
When I open the PDF and save as EPS (better quality then the TIFF) in the Photoshop CS 8.0, the image is rasterized and becomes with "serrates" in the image. Besides that , this "image" is a text.
To avoid a little of the rasterized points in the image I put with 1270 dpi and it`s becomes just fine to import to Quark.
However, the EPS file have a huge size and brings to me some troubles because my network it`s based-10Mbps.
I do all the tips indicated with the felows and could not make with the way that I have to do.
I have to import this image in to Quark`s file with the minor size to avoid the troubles that I have mencioned.
Thanks anyway,
Daniel.
