A&P Why are the my JPG exports from LightRoom half the size of my RAWs?

Discussion in 'Lifestyle' started by Creator, Jul 6, 2008.

  1. Creator

    Creator The Creator Has a Master Plan

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    I just noticed that all the jpgs im exporting from Lightroom are half the size (around 4-5 megs) of the RAWs. This just started with pictures from my 40d. On my 20D the JPGs would be around the same size as the raws I exported. I've triple checked the obvious stuff like the export settings. Whats going on here?
     
  2. DRAIGON

    DRAIGON New Member

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    Sounds like a custom setting issue.
     
  3. OneTwo

    OneTwo me>you OT Supporter

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    shouldnt they be half the size or more from raw files?
     
  4. DRAIGON

    DRAIGON New Member

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    When you export, there is a setting at the bottom of the window, uncheck the box
     
  5. DRAIGON

    DRAIGON New Member

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    Im not sure on this. :o
     
  6. DRAIGON

    DRAIGON New Member

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    mojito can probably answer all these questions, send a PM,
     
  7. xenon supra

    xenon supra OT Supporter

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    uncheck the resize box
     
  8. DRAIGON

    DRAIGON New Member

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    Mojito=Lightroom Master
     
  9. Dwight Schrute

    Dwight Schrute New Member

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    Are you talking file size or resolution? File size should obviously be way less, resolution shouldn't be.

    Make sure "Resize to Fit" is unchecked in the Export window.
     
  10. OneTwo

    OneTwo me>you OT Supporter

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    i figure since your converting to jpg, your throwing away all the data that makes a raw file.
     
  11. DRAIGON

    DRAIGON New Member

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    I dont see why it would change the resolution though!
     
  12. xenon supra

    xenon supra OT Supporter

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    it doesnt change the resolution, make sure this box is unchecked:

    [​IMG]
     
  13. Girth

    Girth ¯\_(ツ)_/¯ OT Supporter

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    I came here to post this. Bottom right hand of the window to be exact!
     
  14. OneTwo

    OneTwo me>you OT Supporter

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    oh, well i didn't think he was talking about resolution, i thought he was talking about the file size since he said "are half the size (around 4-5 megs) of the RAWs."
     
  15. xenon supra

    xenon supra OT Supporter

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    JPG is only 1 exposure where as raw includes a range of exposures, thats why its not as big in file size
     
  16. Dwight Schrute

    Dwight Schrute New Member

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    Say what? That makes no sense. There is only one exposure in a single frame. A raw file is just the raw data from your camera's sensor, nothing more.

    JPEG is a lossy compression standard, that is the reason the file size is smaller.
     
  17. Creator

    Creator The Creator Has a Master Plan

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    On my 20D the RAWs and JPGs were about the same size, not half the size. And I don't have that box checked in LR
     
  18. xenon supra

    xenon supra OT Supporter

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    the checkbox is only if you were refering to image resolution, not file size
     
  19. Dwight Schrute

    Dwight Schrute New Member

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    You still haven't said if you're talking about the file size or the resolution. Obviously if the resolution is smaller the file size will be smaller, all other things being equal. But are you asking why the file size is smaller despite the resolution being the same?

    Were you converting your 20D raw files to JPEG using the same method you're trying to do now with LR?

    The 40D has a higher resolution sensor than the 20D. Assuming you're using the same JPEG compression, the 40D's JPEGs will be bigger than the 20D's, obviously.
     
  20. Creator

    Creator The Creator Has a Master Plan

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    I am talking file size, not resolution. Same exact process as I used on the 20d
     
  21. mobbarley

    mobbarley Active Member

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    no
     
  22. mobbarley

    mobbarley Active Member

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    RAW files should be bigger, no idea why you think they were the same with the 20d. Not to mention that with the 40d the raw can have a higher bit depth? that would make them significantly bigger.
     
  23. Dwight Schrute

    Dwight Schrute New Member

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    Yep.
     
  24. jared_IRL

    jared_IRL OT Supporter

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    what the fuck?

    :rofl: :ugh: :rofl:
     
  25. mojito

    mojito New Member

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    assuming you don't change the resolution, JPEG should ALWAYS be smaller in file size. Its a mater of compression and less information. Nothing wrong with that. Hell just look at the amount of available shots on your camera when you switch between RAW vs JPEG
     

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