Lightroom edit my .dng files. Why?

Hello!

First, excuse my bad English, I'll do better than I can.

I just noticed that my backup software backup images edited in Lightroom. Indeed, the files has been changed: md5sum changed. However, If I open this .dng file outside of Lightroom, I can see thatthe image itself is always the same, the changes made in lightroom is not visible. Tit's normalLightroom is a not destructive editing tool. But what is the change in the file? It's a big problem for me, because my backup software consider that this file has changed, that's why he back it up. I thought that that only the catalogue is changed.

Can someone help me understand?

Thank you!

Lightroom writes metadata (data image, such as stars, keywords and so on) in the DNG files to your application or any change when you have autowrite enabled in preferences.

Tags: Photoshop Lightroom

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