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Participant
January 27, 2018
Answered

Supplied photos problem

  • January 27, 2018
  • 2 replies
  • 805 views

I am working with low Rez photos. I need them 300 dpi and at least 8” large. Is there a pixel dimension that I can request they use that would get me what I need? I don’t do enough photography to address this. And most photographers I ask don’t do printed work so they don’t know. Any ideas?

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Correct answer Michael J. Hoffman

Hi kialua,

You’ve more or less answered your own question.

If you need 300ppi and want to print 8 inches in size, then the photos need to be 2400 pixels (300 x 8). I personally have had good results with 240 ppi, and an 8 inch print at 240 needs to be just 1920 pixels across.

Mike

2 replies

JR Boulay
Community Expert
Community Expert
January 28, 2018

The resolution of images is an obsolete notion inherited from paper photos and scanners of the twentieth century:

https://translate.google.fr/translate?sl=fr&tl=en&js=y&prev=_t&hl=fr&ie=UTF-8&u=https%3A%2F%2Fwww.abracadabrapdf.net%2Fr…

Acrobate du PDF, InDesigner et Photoshopographe
Michael J. Hoffman
Community Expert
Michael J. HoffmanCommunity ExpertCorrect answer
Community Expert
January 28, 2018

Hi kialua,

You’ve more or less answered your own question.

If you need 300ppi and want to print 8 inches in size, then the photos need to be 2400 pixels (300 x 8). I personally have had good results with 240 ppi, and an 8 inch print at 240 needs to be just 1920 pixels across.

Mike

kialuaAuthor
Participant
January 28, 2018

Thanks Mike. As long as one of the dimensions is 2400 then it should work. But ppl is not the as dpi. I need 300 dpi for printing presses. Isn’t “ppi” pixels per inch for monitors? And ”dpi” dots per inch for printing presses?

Michael J. Hoffman
Community Expert
Community Expert
January 28, 2018

You’re correct that ppi is for monitors and dpi for print. But for practical purposes we can consider them equivalent for calculating the required image size.

Mike