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craigpmhere
Known Participant
February 22, 2024
Answered

File Size

  • February 22, 2024
  • 1 reply
  • 276 views

I'm trying to understand sometime about how the file size works. I have a scanned acrylic painting Tiff file, which when opened in photoshop has an image size 28x40 inches at 300 DPI and a file size of 574 M. 

 

However, I have tried increasing the dimensions to 35x50, and the DPI does not adjust accordingly; it remains at 300 DPI and a file size of 897 M. It seems that the DPI should be lower when I increase the dimensions, and it seems that the file size should remain the same, so what's happening there?

    This topic has been closed for replies.
    Correct answer Semaphoric

    It depends on if the Resample box is checked in the Image Size dialog. If it's checked, Photoshop creates new pixels, leaving the resolution the same.

     

    When it's not checked, the pixels stay the same, but the resolution changes.

    1 reply

    Semaphoric
    Community Expert
    SemaphoricCommunity ExpertCorrect answer
    Community Expert
    February 22, 2024

    It depends on if the Resample box is checked in the Image Size dialog. If it's checked, Photoshop creates new pixels, leaving the resolution the same.

     

    When it's not checked, the pixels stay the same, but the resolution changes.

      C
      craigpmhereAuthor
      Known Participant
      February 22, 2024

      Thanks, that makes more sense now. Yes I saw the "Ressample" box but didn't know how it worked before.

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