Re: View Size vs. Print Size and Resolution in Adobe Photoshop


Question

They say you start to see the pixels in an image when it is printed around 200 dpi/ppi or less, right? I'm looking at some images here at 100% view in photoshop, and when I open the image size window, it tells me that the images are between 70-100 ppi each. However, I measured the images on my screen and they are both larger than the shown print size, AND I see no pixels or other signs of poor quality in the image being displayed on my monitor.

So my question is: Why would the image print in less quality/smaller size than it displays? Is it really necessary to print in 200+ ppi (or the more recommended 267-360 for HQ) to get a quality print, or am I missing something here?

Since many are unique designs that I've spent a fair amount of time on, I'd hate to have to discard, upsample, or restart from scratch. Any help you can provide would be much appreciated.

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7/12/2013 8:10:00 PM

However, I measured the images on my screen and they are both larger than the shown print size, AND I see no pixels or other signs of poor quality in the image being displayed on my monitor.

This is due to how images are rendered on a screen vs. how they are rendered in print. On a screen, 300 pixels gives you 300 individual points of resolution on the screen.

On paper, though, it'd different. 300 pixels of information need to be printed using a dot pattern (screen) so that the four CMYK colors can be visually blended. So it's not really an equal comparison.

Is it really necessary to print in 200+ ppi (or the more recommended 267-360 for HQ) to get a quality print, or am I missing something here?

It really depends on the printer and the image. Sometimes a photo with only 150ppi of data can look just fine on paper. But a detailed pen sketch my look horrible at 200ppi.

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8/12/2013 9:36:00 PM

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