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vanessa26775126m93i
vanessa26775126m93i
Participant
February 19, 2024
Question

Lightroom export 20 mb feature

  • February 19, 2024
  • 1 reply
  • 1256 views

Websites like showit request a photo size of 20 MB. Lightroom doesnt have this easy feature. I have to resort to goint to another site that cost $139 for unlimited conversions. Will Lightroom be updating this? It would make like A LOT EASIER.

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    1 reply

    Per Berntsen
    Community Expert
    Per BerntsenCommunity Expert
    Community Expert
    February 19, 2024

    I had a look at the Showit website, and found no mention of a 20 MB file size requirement.

    What they do recommend is 3500 pixels on the long side.

    If this is for jpg, file size is not an indicator of image quality. The file size of a jpg is largely dependent on image content.

    An image with lots of sharp, busy detail will have a much larger file size than an image with predominantly smooth, flat or out of focus areas. If you have an image in the latter category, it may not be possible to reach 20 MB, even at 100 quality.

     

    However, the feature you're requesting does already exist in the Export dialog, Limit file size to.

    The problem with using this feature is that you have no control over the Quality setting, and may end with an image with visible compression artifacts and unacceptable quality.

     

      vanessa26775126m93i
      vanessa26775126m93iAuthor
      Participant
      March 2, 2024

      Yes its a bit confusing.  For instance this book making site called ARTIFACT UPRISING limits photo size to 25mb. I want my customers to have the best quality but Im so confused why I cant figure this out.

      Per Berntsen
      Community Expert
      Per BerntsenCommunity Expert
      Community Expert
      March 3, 2024

      It’s about an 8x10 yes needs to be 25mb max.


      Vanessa Melendez
      Photographer / Videographer


      File size cannot be used as an indicator of image quality, especially not for jpgs. (see my post above)

      This very sharp and detailed image was exported at 7.5 x 10 inches, 300 ppi, 100 quality, and the file size is 7.6 MB.

      Right click the image, choose Open in new tab, and examine it at 100%. You will see that there is nothing wrong with it.

       

       

      The image below contains a large area of smooth sky, which is easy to compress.

      It was exported using the same settings as the first image, and the file size is 1.5 MB.

      No matter what image you choose, you'll never reach a file size of 25 MB at this size. (25 MB is the maximum size allowed at Artifact uprising, not the recommended size)

       

      I've written a couple of articles that may help you understand this better.

      What is a digital image?

      File formats

       

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