Lightroom CC: When I export photos without dimension, and I open the exported file in Photoshop, Lightroom have dimensioned file

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I have one problem with lighroom cc: when I export a photo in every type of extension for example tiff, and I remove the tag ridimension, when I reopen photos in photoshop, I find the photo redemensioned. when I export with camera raw The dimension are the same of the raw

and why the camera raw export give me a 300 ppi and the lightroom export give me 300ppcm?
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Gianni Rovai

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Posted 1 month ago

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Johan Elzenga, Champion

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Both applications have their own resolution settings for export, so this is what to expect if you don't set them to the same value. In Lightroom go to Preferences - External Editor (or check your Export settings). In Camera Raw, click on the link below the image.
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richardplondon

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Un-checking "Resize" in Lightroom Export disables the options for overriding width and height.

In this case Resolution only affects the PPI number assigned to the output image, and does not change its pixel count.  Just as when you define a width/height in terms of pixels.

The Resolution option does still remain active even when Resize is un-checked: it can still be changed.

So if you set your LR export to 300 pixels per inch instead of 300 pixels per cm, then that's what the exported file will show. The Resolution units are located next to the Resolution number.

Results should be exactly the same as ACR, assuming ACR is set to output 300 pixels per inch.
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Gianni Rovai

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Thanks i have seen this problem and now it’s ok