Exporting from LR mobile, file size smaller

Forum|Forum|6 years ago
February 8, 2019
2 replies
5664 views

Hi all,

Got an Issue with LR CC mobile, when I export from the iPad at maximum file size, the image file size is smaller than when exporting the same image file to the same location or different from LR CC desktop.

So the same file exported from LR mobile is 9.2Mb, from the desktop its 16.9Mb.

Any idea why? Is this a limitation of iOS?

Cheers for any info,

Tim.

ipad lr mobile file sizes

This topic has been closed for replies.

K

keithw43881592

New Participant

I believe I’m having the same (ish) issue. I’m trying to use my iPad Pro (3rd gen). I’m using a very large image size (50 megapixel) and making adjustments. I then select export maximum size which should be 8688 x 5792 (depending if I cropped or not) but the image I get is 2560 x 1707.

I’m hoping someone can answer this ..

Jim Wilde

Community Expert

No, that's almost certainly a different issue. A long edge pixel dimension of 2560 means the "original" image is probably only a smart preview, which is what you get in the cloud if you sync images from LR Classic (Classic cannot upload the full originals, only smart previews). If you want to export full resolution files from LRCC on your iPad, you need to have the full resolution file in the cloud, which you can only get if you import the image into any of the LRCC client apps.

I suppose it might be possible to achieve the same effect even if the full resolution file IS stored in the cloud, but only if a smart preview is stored locally on the iPad and at the time of doing the export you have no internet connection (so the full resolution file cannot be downloaded to complete the export). I haven't tested that scenario, so I don't know if that is possible.

Jim Wilde

Community Expert

I think you'll find that the iOS version of LRCC will export at a quality setting of around 80 (more than good enough for most uses), whereas the desktop version of LRCC exports at a quality setting of around 90 (more than good enough for almost all uses). It would be better if the user had some control over the export settings such as in LR Classic, but until we do I don't have any particular problem with the way exports work in those apps,

tims14661503Author

Participating Frequently

But that's like saying, I'm going to turn down the quailty of my camera, cause you can't tell the difference.

You wouldn't, so if I've shot in raw and want to export at full jpeg quality.

Jim Wilde

Community Expert

All I'm saying is that if you do want to export at "full jpeg quality", you can't do it using either LRCC desktop or LRCC iOS. You'd need to either use LR Classic or Photoshop, or switch to some other image editor. Personally, I don't print so for digital viewing purposes exporting at full jpeg quality is likely just a waste of disk space, so I'm more likely to use quality setting around 80 even when using LR Classic.

You might find this article interesting: Jeffrey Friedl's Blog » An Analysis of Lightroom JPEG Export Quality Settings

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