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jim_robertson_7046865's profile

232 Messages

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3.9K Points

Wed, May 23, 2018 10:02 AM

Answered

Export file size

I have two TIFF files in a  folder, neither have any layers. EXPORTING to desktop as TIFF, pixel dimensions unchanged, one image's MB size stays the same, the others is about 1/3 less. But if I EXPORT them as ORIGINAL, the MB size does not change.. I don't understand why. Could someone explain it please. Thank you

Responses

232 Messages

 • 

3.9K Points

3 years ago

I think I just figured it out.......
There was a crop on the image. When I EXPORTED it as a TIFF (which the file is) I got the cropped version, when I exported it as ORIGINAL I get the uncropped version.

The cropped area was very similar to the rest of the image, that's my excuse for not spotting the difference

627 Messages

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11.3K Points

3 years ago

Also, when exporting as a TIFF, you can set options for compression, color space, & bit depth.  Your choices there will affect the resulting size of the exported TIFF.

When exporting as "Original", Lr is basically just making a copy of the original file - TIFF, jpg, dng, whatever.  There are no additional export settings that would cause the size to change.