Size of a photo in Ko in Lightroom

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Where can I read the real size of a photo in Mo or Ko or Go in Lightroom? I don't find it in the metadata pan. The size is indicated in pixels but not in Mo. Or I miss something.
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Claude Langlois

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Posted 4 years ago

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Steve Sprengel, Champion

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Size, where, in memory, on disk as a 16-bit TIF, or as a JPG or what?
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Claude Langlois

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Here is what we saw when we click on a photo, whatever is the format, in Bridge or Aperture): the ┬źdimension┬╗ of the file (4896 X 3264) but also de size (3,64 Mo).

https://www.facebook.com/photo.php?fb...

We can not find that information in the Lightroom metada Pan, when we click on a photo; just the dimension (4896 x 3264 in the case)
https://www.facebook.com/photo.php?fb...

How can I find that information in Lightroom?
Thank you for yourt answer (and excuse my bad english)
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Steve Sprengel, Champion

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Your English is much better than my French so we're good, there. One difference is that I'd use KB (kilobytes) or MB (megatyes) instead of Ko (kilo octets) or Mo (mega octets).

4896 x 3264 = 15 980 544, so the 3.64 Mo/MB is too small to be even 1-byte-per-pixel so it must be the size of the original master photo on disk that is compressed quite a bit, perhaps a JPG.

I can see File Size in the Metadata panel in Library along with other File-related things like Creation Date, Modification Date, Access Date, but in the Loupe Info or Thumbnail Info area File Size does not appear to be an option to display, so the only place to see it is in the expanded Metadata panel area.

I'd guess that is because LR is a photo-centric editor, not a file-browser, so things that are more file-only aren't options for display everywhere in the interface. I mean when you are adjusting an image in LR, what you're working with is in memory, not doing something with the file on disk, anymore, because the changes you make can only be in a file if you export a new file, and LR cannot predict what that new file size would be until you export it with particular options set in the Export panel.

Here is where I see the File Size on disk that I think is where you'd see the Ko number you expect:
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Claude Langlois

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Thank You so much for your answer. I now have the information I needed. I'm an Aperture guy who just switch to Lightroom. I still have a lot of things to learn. Thanks again.