Change resolution to 300dpi after editing in Photoshop

[JMA1]

Hi,

My question is about changing the resolution of a photo in Adobe Photoshop CC.

When changing the resolution of an image from 72 dpi to 300 dpi, it gives my pc a hard time with editing the photo (now 300 dpi) with several layers.

Can I actually change the resolution to 300dpi after I edited the whole image with several layers. Because then my PC can more easily deal with editing of the image.

Kind regards,

JD

[John T Smith]

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[JMA1]

Put in the message!

It's for Adobe photoshop

[D Fosse]

Don't do that. Upsampling doesn't help for anything, it just interpolates new pixels. There's no benefit to anything. Don't do it.

Use the ppi number as a guide to how big it is possible to print your image in various situations. At a certain print size, the pixel density becomes too low. You generally want 250-300 ppi for an inkjet print or book/magazine reproduction to be seen from up close. For a billboard it could be as low as 10 ppi.

The larger the print, the lower the ppi requirement, because it seen from farther away. The optical resolution stays the same. A good image from a good camera can be used for anything. Magazine spread, poster, billboard. No upsampling is necessary.

Please read this recent thread. It explains everything in detail:

https://community.adobe.com/t5/photoshop/how-to-reduce-image-size-for-prints/m-p/11034411?page=1#M32... 

[Just Shoot Me]

DPI stands for Dots Per Inch and it is a Printing term.