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audreyw66064178
audreyw66064178
New Participant
September 23, 2018
Answered

Can't change resolution when exporting

  • September 23, 2018
  • 3 replies
  • 2948 views

Hello,

I am exporting my raw files as dng, 3200 px on the longest side, but there is no way to change the resolution! It is at 240 ppi. I need to change it to 300. But it's greyed out so I can't change it! Please help! Thanks.

    This topic has been closed for replies.
    Correct answer Dave Merchant

    DNG files are non-debayered copies of the sensor data in the original camera file, you cannot resize them. The concept just doesn't make sense.

    3 replies

    audreyw66064178
    audreyw66064178Author
    New Participant
    September 23, 2018

    Thank you all for helping. I am uploading raw files through the internet to the server of Classic Photographers, the wedding company I work for. They require the exports to be raw DNG, which is the file type I shot the wedding in. They have me check the box that says "use lossy compression." They ask the image to be resized to 3200 on the long edge. They ask me to have the resolution to be 300 ppi, but the box that would let me check that is greyed out...

    D
    dj_paige
    Brainiac
    September 23, 2018

    As stated above, you can't change the number of pixels or the resolution for a DNG.

      JP Hess
      JP Hess
      Inspiring
      September 23, 2018

      Even if the image was pixel-based, changing the PPI setting would be meaningless. If the image is 3200 pixels on the long side, is 3200 pixels long regardless of whether the PPI setting is 300 PPI or 240 PPI or 72 PPI. That setting has no impact on image quality at all.

      johnrellis
      johnrellis
      Brainiac
      September 23, 2018

      PPI can be useful for those who deal with physical media -- it's used by programs that print to determine the physical size of the image. For example, here's the same 1000 x  667 photo inserted into a Microsoft Word page, the first photo set to 300 ppi and the second to 150 ppi:

      D
      dj_paige
      Brainiac
      September 23, 2018

        wrote

      PPI can be useful for those who deal with physical media -- it's used by programs that print to determine the physical size of the image. For example, here's the same 1000 x  667 photo inserted into a Microsoft Word page, the first photo set to 300 ppi and the second to 150 ppi:

      But you would not use a DNG if that was the intended use.

      D
      Dave MerchantCorrect answer
      Brainiac
      September 23, 2018

      DNG files are non-debayered copies of the sensor data in the original camera file, you cannot resize them. The concept just doesn't make sense.

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