What the visual difference between DPR: 1.0, DPR: 2.0, DPR: 3.0 for human eyes?











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0
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For example :



I have thumbnail of image in fixed size block 250x250px.
And three images:



<img sizes  = "250px"
src = "image-250w.jpg"
srcset = "image-250w.jpg 250w,
image-500w.jpg 500w,
image-750w.jpg 750w"
>


So browser pick candidate 250w for device with DPR: 1.0, 500w for device with DPR: 2.0 and 750w for device with DPR: 3.0.



So what the visual difference between these DPR 1,2,3 for human eyes?



I don't have devices(iPhone, etc.) with different DPR to see this. And device emulations can't show me this while I do it on same display.










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    up vote
    0
    down vote

    favorite












    For example :



    I have thumbnail of image in fixed size block 250x250px.
    And three images:



    <img sizes  = "250px"
    src = "image-250w.jpg"
    srcset = "image-250w.jpg 250w,
    image-500w.jpg 500w,
    image-750w.jpg 750w"
    >


    So browser pick candidate 250w for device with DPR: 1.0, 500w for device with DPR: 2.0 and 750w for device with DPR: 3.0.



    So what the visual difference between these DPR 1,2,3 for human eyes?



    I don't have devices(iPhone, etc.) with different DPR to see this. And device emulations can't show me this while I do it on same display.










    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      For example :



      I have thumbnail of image in fixed size block 250x250px.
      And three images:



      <img sizes  = "250px"
      src = "image-250w.jpg"
      srcset = "image-250w.jpg 250w,
      image-500w.jpg 500w,
      image-750w.jpg 750w"
      >


      So browser pick candidate 250w for device with DPR: 1.0, 500w for device with DPR: 2.0 and 750w for device with DPR: 3.0.



      So what the visual difference between these DPR 1,2,3 for human eyes?



      I don't have devices(iPhone, etc.) with different DPR to see this. And device emulations can't show me this while I do it on same display.










      share|improve this question















      For example :



      I have thumbnail of image in fixed size block 250x250px.
      And three images:



      <img sizes  = "250px"
      src = "image-250w.jpg"
      srcset = "image-250w.jpg 250w,
      image-500w.jpg 500w,
      image-750w.jpg 750w"
      >


      So browser pick candidate 250w for device with DPR: 1.0, 500w for device with DPR: 2.0 and 750w for device with DPR: 3.0.



      So what the visual difference between these DPR 1,2,3 for human eyes?



      I don't have devices(iPhone, etc.) with different DPR to see this. And device emulations can't show me this while I do it on same display.







      html image responsive-images srcset devicepixelratio






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      edited Nov 15 at 1:34









      Josh Lee

      116k23210241




      116k23210241










      asked Nov 11 at 22:10









      niceday

      177112




      177112
























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          I did a quick google & found that to simulate DPR effect on a standard display, you need to set the DPR to 2 and scale the viewport by zooming. A 2x asset will continue to look sharp, while a 1x one will look pixelated.



          This way you can visually test the difference between different DPR values.



          For further reference, you can see this https://developers.google.com/web/tools/chrome-devtools/device-mode/emulate-mobile-viewports#device_pixel_ratio_dpr






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            up vote
            1
            down vote



            accepted










            I did a quick google & found that to simulate DPR effect on a standard display, you need to set the DPR to 2 and scale the viewport by zooming. A 2x asset will continue to look sharp, while a 1x one will look pixelated.



            This way you can visually test the difference between different DPR values.



            For further reference, you can see this https://developers.google.com/web/tools/chrome-devtools/device-mode/emulate-mobile-viewports#device_pixel_ratio_dpr






            share|improve this answer

























              up vote
              1
              down vote



              accepted










              I did a quick google & found that to simulate DPR effect on a standard display, you need to set the DPR to 2 and scale the viewport by zooming. A 2x asset will continue to look sharp, while a 1x one will look pixelated.



              This way you can visually test the difference between different DPR values.



              For further reference, you can see this https://developers.google.com/web/tools/chrome-devtools/device-mode/emulate-mobile-viewports#device_pixel_ratio_dpr






              share|improve this answer























                up vote
                1
                down vote



                accepted







                up vote
                1
                down vote



                accepted






                I did a quick google & found that to simulate DPR effect on a standard display, you need to set the DPR to 2 and scale the viewport by zooming. A 2x asset will continue to look sharp, while a 1x one will look pixelated.



                This way you can visually test the difference between different DPR values.



                For further reference, you can see this https://developers.google.com/web/tools/chrome-devtools/device-mode/emulate-mobile-viewports#device_pixel_ratio_dpr






                share|improve this answer












                I did a quick google & found that to simulate DPR effect on a standard display, you need to set the DPR to 2 and scale the viewport by zooming. A 2x asset will continue to look sharp, while a 1x one will look pixelated.



                This way you can visually test the difference between different DPR values.



                For further reference, you can see this https://developers.google.com/web/tools/chrome-devtools/device-mode/emulate-mobile-viewports#device_pixel_ratio_dpr







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 12 at 5:21









                AssaultKoder95

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