Exporting to JPEG, 300dpi for a online book publisher

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Dave Biggs

• January 04, 2019 18:24

The online book publisher I use, recommends that the images for the book are JPEG with 300 dpi to give best print quality. Can’t set dpi manually in jpeg export, so does the slider on 100% quality give me this?

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  Bernhard Martin

  • January 04, 2019 18:44

  No, the quality slider does the setting of more or less compression.
  This has nothing to do with the dpi.

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  Richard Huggins

  • January 04, 2019 21:42

  You can specify dpi in tiff. So export as a tiff then convert to jpeg outside Luminar. I had seen Skylum was going to fix this "in a future release" like they promise with everything.

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  Dave Biggs

  • January 04, 2019 22:37

  Thanks all , especially Mike for the list, great info.

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  Lynne Calvert

  • October 31, 2021 19:17
  • Edited

  A lot of my images are 300 dpi png. Why the extra step because of Luminar's automatic 96 dpi. Will this change? It seems kind of counter-productive to have an image in 300, gets changed to 96, then back to 300. There's got to be some pixel loss in all that. (obviously there was when it changed it to 96).

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  Anastasia Davis

  • November 01, 2021 09:59

  Lynne Calvert Hi! Please note that you can choose 300 dpi if you export in TIFF.

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  Lynne Calvert

  • November 01, 2021 15:00
  • Edited

  I understand, but TIFF is not lossless. PNG is. So you're going to lose during conversion. 

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  Marco Marrocco

  • November 01, 2021 17:10
  • Edited

  >TIFF is not lossless

  As a matter of fact, it generally is, unless it is used as a wrapper for a lossy image format - which is normally not the case when working with photos.

  https://en.wikipedia.org/wiki/TIFF#Features_and_options

  Regards,

  --

  Marco

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  Lynne Calvert

  • November 01, 2021 17:14

  I respect your opinion and appreciate your input. I make a boatload of t-shirts that require a transparent background and at least 300 dpi. I need to be able to export as a png without having to go back and remove the background every time and/or changing it back to 300 dpi. Whenever you convert, you always lose. Just my opinion and has been my experience. I've got to have a transparent background, which you cannot get otherwise. It's a waste of my time to have to keep removing the backgrounds that this software keeps adding back if I export in any other format. 

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