Experts Help Please, PDF Problem 1

[enigma2212]

Hi,

traditionally am a web designer and so am new to the world of print graphics and so was wondering if you clever people could help me.

Basically i have been asked to produce large artwork for a pop up banner 800x2100mm and another banner 6'.2"x2'.
I am going to design these in quarter scale with the resolution at 4x recommended. is this correct?

my main problem is the high res pdf...when i ask printers what resolution they want the artwork in they just say "press ready high res pdf" what does that mean resolution wise??? what resolution do i set the bicubic down sampling to in the pdf settings if my art work is in 25% scale??

I know for 100% it is downsample to 300dpi for above 450dpi.

 

[eugenetyson]

In your InDesign page.

Click on an image and go to Window>Info and check the Effective PPI.

Typically for printing, the Effective PPI needs to be 300ppi.

So if you're designing a 25% scaled version, then the images need to be x4 that resoloution.

(25% x 4 = 100%, 300 ppi x 4 = 1200 ppi)

So your images should have a reading of 1200 ppi in the Effectiveness PPI area of the Info Panel.

But that's the basics of it really.

You really don't need to have it 1200 ppi in the Effective, it's a display, it will be viewed from far away. You could probably get away it having 800-960 Effective PPI.

To answer your question

In the PDF output:

All downsampling will do is it will look at the effective PPI of all the images.

Then it will find all the Images

"for images above 450 ppi" (you can insert your own figure her)

And it reduces it to the number in the box above it.

So if you're going to scale x 4

You would want to find all the images that are

"for above images above 1201" and in the box above put in "1200"

This only affects images above 1200 ppi, not below, so it will help to keep the size of the PDF down.

Would you want to have an image 2,400 ppi and double the size of the file or would you prefer to halve the size by downsampling to the size you actually need for this print job.

The answer is, downsample and keep the pdf size smaller, this will increase the speed through a printing RIP, and it will make it easier for transfer via email, or FTP et al methods of transport (disk etc?)

http://www.doozler.blogspot.com/

 

[enigma2212]

eugenetyson ure a complete gem! Thank You!!!