Danger in high effective resolution?

[decerbodesign]

I just started to have a new fear...

I am putting together a book with many pictures for a man who keeps changing his mind on the final size of his images. As a result, I've scanned all of his images to allow them to be used quite large. But some are ending up quite small in the final product. As long as I make sure that the effective DPI is never below 300 ppi (the printer's min requirement), is there any danger of having a really high effective ppi? In some cases, the images are being used as only 5% size. Will that cause any printing problems?

Also, is there an automated way to reduce the size of your images to a particular DPI within InDesign so that the cropping/positioning can be maintained? Should I just plan to make a PDF with the image downsampling turned on?

THANK YOU!!

 

[jimoblak]

The only harm in using larger images is the extra time that it takes InDesign to downsample to the output resolution of the print or PDF export.

- - I hope this helps - -
[sub](Complain to someone else if it doesn't)[/sub]

 

[decerbodesign]

Great - just wwanted to make sure. As I get to the end of a large project, I begin to worry about things I decided were ok early on.

Thanks sooo very much for the reassurance!

 

[Lessa]

I did the same thing once. I called my printer and he said that back in the day, yes it did matter, because the RIP software would get bogged down. But nowadays, no worries. He even said that it's OK to enlarge photos a bit and print them at 250dpi. Depends on how much of a purest you are.

So the main question for you is how much it slows down your machine.