How to increase resolution of a photo?

4 years 7 months ago #654345 by Jerrid
I feel this is something I should know, however I'm drawing a blank.  When you have a photo that has a resolution of XX pixels per inch and you want to increase it to XXX pixels per inch, how can this be done in Lightroom or Photoshop?  


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4 years 7 months ago #654357 by Shadowfixer1
Image size in Photoshop.
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4 years 7 months ago #654383 by robertsmith19
In Adobe Photoshop, you can easily increase the resolutions of your photo. You need to simply press the [Alt+ctrl+I] There will appear a display about image resizing. Increase the size with the resolution option. It will increase the image resolution.


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4 years 7 months ago #654479 by garyrhook
You're not referring to increasing the resolution of an image. You're talking about changing a parameter that is, essentially, meaningless.

So the question becomes, why? Why bother? I mean, aside from having to placate idiotic print services that think a ppi value of less than 300 means something.... which it does not.

Resolution is about the total image dimensions, not some silly ppi setting. If you have a 4000 x 3000 image set at 100 ppi (which implies a size of 40" x 30"... as if) and you change it to 300 dpi, you allege a size of 13.3" x 10". If you take that image, ignore ppi, and print a 5x7, you get ... the same thing no matter what the ppi setting.

If you actually need to increase the resolution, you can use PS, Capture 1, Topaz Labs Gigapixel, etc. And upsize the file to a larger number of pixels in each dimension. All without needing to change the ppi value.


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4 years 7 months ago #654502 by Shadowfixer1
Don't forget if you check resample when changing image size you will increase the resolution. Now, whether one considers that better or not is another story. Back in the beginning it wasn't very good at doing the interpolation so we had tricks or specialty software to help with that problem. The new software does a pretty good job at increasing the resolution. It's not as good as capturing it natively, but it's better than not having it at all.
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6 months 2 weeks ago #756067 by isabellasophie

garyrhook wrote: You're not referring to increasing the resolution of an image. You're talking about changing a parameter that is, essentially, meaningless.

So the question becomes, why? Why bother? I mean, aside from having to placate idiotic print services that think a ppi value of less than 300 means something like .... which it does not.

Resolution is about the total image dimensions, not some silly ppi setting. If you have a 4000 x 3000 image set at 100 ppi (which implies a size of 40" x 30"... as if) and you change it to 300 dpi, you allege a size of 13.3" x 10". If you take that image, ignore ppi, and print a 5x7, you get ... the same thing no matter what the ppi setting.

If you actually need to increase the resolution, you can use PS, Capture 1, Topaz Labs Gigapixel, etc. And upsize the file to a larger number of pixels in each dimension. All without needing to change the ppi value.

When I add the widget with photos to my home screen it displays a certain album being memories etc.. Is there a that I can select which album I want to be appearing on this widget?


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