P: Syncing develop settings to a large batch of photos can wipe out the previous settings of a batch

Moderators, ​@Sameer K, please merge with this existing bug report:

https://community.adobe.com/bug-reports-674/p-syncing-develop-settings-to-a-large-batch-of-photos-can-wipe-out-the-previous-settings-of-a-batch-663817?postid=7160733#post7160733

Also, please unlock that thread, since it’s an unresolved bug report and others should be able to contribute to it.

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i did apply auto and then copied only two settings (contrast and blacks) to all pics, with both copy/paste and sync

You’re tripping over an old bug that was never fixed:

https://community.adobe.com/bug-reports-674/p-syncing-develop-settings-to-a-large-batch-of-photos-can-wipe-out-the-previous-settings-of-a-batch-663817

There have been a few reports about these symptoms in the last couple of months.

Try this workaround for applying Auto to a batch of photos:

1. In Library Grid view, select the desired photos.

2. In the Quick Develop panel, click Auto.

3. Do the menu command Library > Previews > Build Standard Sized Prevews and wait for it to complete.

4. Now sync or auto-sync additional develop settings to those photos, and the settings computed by Auto shouldn’t be erased.

Version

Did you first apply Auto Settings to the photos before syncing the basic setting?

It would be very helpful if you told us the version NUMBER of your Lightroom Classic. Words like “latest version” mean different things to different people, which is why we need the version NUMBER.

I suggest you show us a video capture your Lightroom Classic so we can see this happening for ourselves. We need a video of the entire full screen, nothing chopped off. It should not be a cell-phone video capture either. On Windows, there are a number of programs that can make this video capture, such as the built in Snipping Tool.

Provo a segnalare un bug, ma la pagina dove scrivere la domanda resta bianca, non si carica. Allora provo a postarlo come domanda. Ho un problema con lightroom classic per cui quando sincronizzo un’impostazione base a delle foto, nel mio caso sono 400, ciò mi resetta tutte le altre impostazioni a zero, e non in tutte le foto: quelle vicine alla foto da sincronizzare ricevono l’impostazione mantenendo le altre regolazioni, da una certa foto in poi vengono resettate. Non so se ho reso l’idea. Così facendo dovrei modificare a mano 400 foto senza poter fare un lavoro più facilitato. Come si può fare? Ho win 10, lightroom ultima versione. Grazie!

Many Thanks for this John. Makes me feel sane again. With all my recent challenges I am way behind. Gets quite disconcerting when there is over 100 photos involved at a time.

Mark as solved.

Moderators, ​@Sameer K, please merge with this bug report:

https://community.adobe.com/bug-reports-674/p-syncing-develop-settings-to-a-large-batch-of-photos-can-wipe-out-the-previous-settings-of-a-batch-663817?postid=7160733#post7160733

You’re tripping over an old bug that Adobe has never fixed:

https://community.adobe.com/bug-reports-674/p-syncing-develop-settings-to-a-large-batch-of-photos-can-wipe-out-the-previous-settings-of-a-batch-663817?postid=7160732#post7160732

I tested one of workarounds, which worked for me in LR 15.6:

1. Go to Library and select the desired photos.

2. In the Quick Develop panel, click Auto.

3. Do Library > Previews > Build Standard-Sized Previews.

4. Go to Develop, enable Auto Sync, and adjust the Shadows slider. The Auto settings applied in step 2 won’t be reset.

In the Develop Module I have always been able to select all the photos in the current folder, Click on Auto then alter the Shadow Slider and all selected photos then have all the Auto Settings and the altered Shadow Setting.

Auto Sync is on.

All of a sudden - not quite sure of the timing, the movement of the Shadow Slider undoes all the Auto settings just applied.

Now I am having to apply Auto to the whole folder, then individually adjust the Shadow Slider in every photo.

It is a real nuisance as about 1 in 10 times it works as I am used to and I have to really watch for it.

I have been searching for an option that would allow me to over-ride the Auto Setting for the way I always want the Shadow Slider set. Does this exist?

All Photos have Auto Applied

Then when I change the Shadow Slider it says it has updated all the photos, but 9 times out of 10 the Shadow Slider setting clears all the Auto settings from all but the displayed photo.