Question on Printing

DU
Posted By
Daniel_Ulysses
Jan 19, 2007
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233
Replies
9
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Closed
Hola to all

Mi question is about ppi

If I want to print a photo 4feet by 4feet, most of the time I choose 120 ppi, in order to save time and memory in Photoshop.
Now, it will make any difference if this picture is print on higher ppi? For example, I’ll being making some big signs and the shop where I send my "banners/picture" they are printing them in a higher resolution. They looks beautiful, but I think that they are wasting ink, because, I think, that if a picture was made at only that resolution, the printer, will "create" more pixels where they are not there.
I hope you understand my question.

Thanks

Daniel Ulysses
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DM
Don_McCahill
Jan 19, 2007
They won’t be wasting ink, because the dots are smaller at the larger resolution … in the end you are covering the same number of square inches.

But you might as well provide them with a file in the resolution they print at. It will be sharper if they don’t have to interpolate to a higher resolution. The only downside is a bigger file and potential slower operation.
DU
Daniel_Ulysses
Jan 19, 2007
Hola Don
The only problem with large files (300ppi) are the memory that I used. I’ll been doing files or banners that are 6feet high by 20 feet long, Thats why I uses smaller files (120ppi)
Sometimes I end-up using files that are 4 Gigs, so it can take "forever" any change that I want to make.

thanks

Daniel Ulysses
BL
Bob Levine
Jan 20, 2007
4′ x 4′? I wouldn’t think anything higher than 75 ppi would be needed for something like that.

Bob
C
chrisjbirchall
Jan 20, 2007
Sorry Bob, but I consider the opposite to be true.

Anything smaller than 10×8" is going to be "sniffed" ie: viewed at a very close distance, therefore 300 ppi would in my opinion be the lowest resolution you would choose.

Sizes between 12×10 and 20×16" are most likely going to be hung on the wall and therefore viewed from a few feet away. At this distance you’d be hard pressed to notice any discernible loss in quality at 240ppi or even less.

Go up to poster sizes and you can drop the resolution way down.

This can be clearly illustrated when you consider those huge billboards that look sharp and full of detail from across the road only to degenerate into a mess of soft mushy dots when viewed close up.
BL
Bob Levine
Jan 20, 2007
Read it again, Chris. It’s 4 feet x 4 feet. I think you misread it as 4 inches by 4 inches.

I’ve done stuff at 4’x4′ at less than 75 ppi and it came out just fine.

Bob
C
chrisjbirchall
Jan 20, 2007
<Cleaning Glasses> Whoops! That’ll teach me to post whilst Liverpool and playing Chelsea on the box! 😎

Sorry ’bout that Bob. Scrub the first line and consider my post as reinforcing your (of course) correct observation 😉
DU
Daniel_Ulysses
Jan 20, 2007
Hola Robert
I had send "pictures" at 120ppi, and they come good, however, what difference –if any– will make when printed at higher resolution in the pictures and in the "waste?" of ink on the printer?

Thanks

Daniel Ulysses
B
Bernie
Jan 20, 2007
Depending on the printer, you may get a sharper image (more details), is it worth the trouble, it depends on what the image will be used for.

Ink coverage should not change in any significant manner.
DU
Daniel_Ulysses
Jan 21, 2007
Hola Cybernetic

Thanks

Daniel Ulysses

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