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Auto all at once is different than when applied individually

wireless200

New Member
Joined
Sep 9, 2013
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16
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Advanced
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Lightroom Version
8.4.1
Operating System
Windows 10
Most of the time after importing photos I'll select them all and click auto in the develop module basic panel.

However the auto adjust done that way is not the same as if one selects a single picture and clicks auto.

For example even though each image in the selected group is auto-adjusted with the sliders having moved in various directions once one goes to them individually the auto slider is still clickable. Clicking auto initiates a further (better) adjustment.

Why?
 
Joined
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I believe that it's done for performance reasons....so rather than having to convert the originals files in order to then do the AI evaluation to calculate and apply the auto settings, the existing ACR cache entries are used instead for the auto adjustment. This greatly speeds up the process, but of course it does tend to make the "auto" result not always quite the same as it would be when applying it to the original file.....hence the "Auto" button being still enabled and further slider adjustments being seen if it is used.
 

wireless200

New Member
Joined
Sep 9, 2013
Messages
16
Lightroom Experience
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Okay, yes, I remember reading something along those lines. Or else auto edits from the image preview rather than using raw file data. Well I wish it had the option to do either but as I found the shortcut CTRL-U it's not a big deal.

Thanks.

I believe that it's done for performance reasons....so rather than having to convert the originals files in order to then do the AI evaluation to calculate and apply the auto settings, the existing ACR cache entries are used instead for the auto adjustment. This greatly speeds up the process, but of course it does tend to make the "auto" result not always quite the same as it would be when applying it to the original file.....hence the "Auto" button being still enabled and further slider adjustments being seen if it is used.
 

Zenon

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Jan 13, 2017
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As a test select a handul of files. Switch Sync to Auto Sync and try it.
 
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