Lightroom: 'Cropped' all my images by 'itself'

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I have Lightroom 2015 6.1 installed on a Mac running 10.11.6. I have a holiday folder with raw and same time jpeg files direct from the camera (August 2016) which all at the import resolution until recently. When viewing the thumbnails 2 nights ago I noticed that both raw and jpeg images went from a resolution of 4896-3264 pxs to 2495-1408 pxs. I was able to get the raw files back to the larger original size by doing a 'select all' reset all in the library mode. The same process did not work on the jpeg files. What is also strange is that when I view the images via finder in time machine mode, the jpegs are the smaller resolution ?? I normally shoot in raw and I could use the raw files and export them as jpegs. Downside is is that I loose the 'camera application' to each jpeg which gives it more zing that an unprocessed raw file. I know I can work on the raw files and achieve a better finish but thats not the point. There is a cause to this which I'd be grateful for any help please. PS adobe tech support via phone and chat (from India) has not resolved things. I think it was above their heads on this occasion and I could not go higher in the tech help unfortunately.
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Alan

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Posted 2 years ago

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Victoria Bampton - Lightroom Queen, Champion

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> when I view the images via finder in time machine mode, the jpegs are the smaller resolution

Lightroom wouldn't have changed any camera JPEGs since it's non-destructive... so that would suggest that the camera itself was set to create smaller JPEGs.

It's more difficult to determine what could have happened with the raw files though. Was it just this folder? What shows in the History panel for these raw files?
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Alan

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Hi Victoria.

The history panel shows nothing apart from the reset for both raw and jpegs. The camera was not set on a lower resolution either I'm sure. As the jpeg images were cropped; by this I mean the spect ratio is different to that of the raw images. If the jpegs were of a lower resolution anyway they would be a different resolution but the constraints would remain the same.

As an example, if I had a raw image of a standing person, the jpeg images would cut off the head and feet.
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Victoria Bampton - Lightroom Queen, Champion

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I think we're going to need to see some examples, as this is not easy to visualize at the moment.
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Alan

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Can I upload a screen shot here?
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Victoria Bampton - Lightroom Queen, Champion

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Yes, when you're typing a reply, you'll see a small camera icon next to the bold/italic/underline icons.
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Alan

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Hi again.

I'll put up a couple of screen shots. You will see the resolution of a raw and jpeg image as the mouse pointer was held over the image.
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Victoria Bampton - Lightroom Queen, Champion

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That looks to me like you'd (possibly unintentionally) set a different aspect ratio in the camera. That would explain why the JPEGs are destructively cropped (since you see the same in Windows), and also why the raw files were cropped by LR on import (LR respects the in-camera aspect ratio).
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Alan

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You are correct indeed Victoria. I did a test in my Fuji XT1. Raw and jpeg (16:9) and Raw and jpeg 3:2. The latter when viewed in the Develop mode (when clicking on the crop tool) shows the jpeg as taken through the view finder whilst the raw file shows the same 'area' as the jpeg bit a 'crop line' with an outer area showing the 16:9 image but slightly 'greyed out'. When I clicked on the reset button the raw file changed to a 16:9 aspect ratio. I can now sleep and thank you very much Victoria for your help.