DJ DEVELOP (PART DEUX) more ways to tweak your images - The Adobe Photoshop Lightroom 4 - page 195

So you learned earlier how to edit one photo, copy those edits, and then paste
those edits onto other photos, but there's a “live-batch editing” feature called
Auto Sync that you might like better (well, I like it better, anyway). Here's what it is:
you select a bunch of similar photos, and then any edit you make to one photo
is automatically applied to the other selected photos, live, while you're editing
(no copying-and-pasting necessary). Each time you move a slider, or make an
adjustment, all the other selected photos update right along with it.

Editing a Bunch
of Photos at Once
Using Auto Sync

Step One:
In the Library module, click on the photo
you want to edit, then in the Filmstrip,
Command-click (PC: Ctrl-click) on all the
other photos you want to have the same
adjustments as the first one (here, I've se-
lected 12 photos that all need the shadows
opened up, and need to be a little warmer
and more colorful). You see the first photo
you clicked on in the center Preview area
(Adobe calls this the “most selected” photo).
Now, go to the Develop module and look
at the button on the left at the bottom
of the right side Panels area. It used to say
“Previous,” but when you select multiple
photos, it changes to “Sync...” (shown
circled here).

Step Two:
To turn on Auto Sync, click on that little
switch to the left of the Sync button (you
can see here the button now says “Auto
Sync”). Now that it's on, I increased the
Shadows amount to +86 (which makes
the shadow areas brighter), I dragged the
Temp slider toward yellow, and I increased
the Vibrance and Clarity a bit. As you make
these changes, look at the selected photos
in the Filmstrip—they all get the exact same
adjustments, but without any copying-and-
pasting, or dialogs, or anything. By the way,
Auto Sync stays on until you turn off that
little switch. To use this feature temporarily,
press-and-hold the Command (PC: Ctrl)
key , and Sync changes to Auto Sync. ( Note:
Remember, you won't see the Sync or Auto
Sync buttons until you select multiple
photos. Otherwise, it will say Previous.)