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I have 3 groups on a slide that I want to highlight 1 at a time. Is there a good way to do this? My slide has a gradient background so putting a rectangle over the objects and faking it mucking with their transparency doesn't seem like a good approach.

Is there a way to make objects start out opacified? If so, I can use the opacity action on the objects, but when I tried to use an opacity action, on transition, with duration 0, it didn't work. Having a short (0.1s) duration causes kind of a jarring flicker.

I also thought about using multiple slides with magic-move handling the opacity changes, but I didn't see a way to change the opacity of a group.

I'm running Keynote 6.5.2 on Yosemite (the most recent releases of both I believe).

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I've built a small demo Keynote file (v5.1, on Mac OS 10.6.8, hope you can open it) -- this does what you're trying to achieve. At start only group 1 is fully opaque, then after each click, group 2 and 3 gain full opacity while the other groups are 50% transparent.
I've solved the 0.1s flicker by putting a copy of the groups underneath group 2 and 3 and setting it to 0% transparency at the beginning.
It could use some tweaking, I'll admit that, but that was just a quick 2am demo.

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  • It flickers for me. There's like a half second delay between switching to that slide and when the inactive groups dim. (I added a slide before to make sure it wasn't just "starting the slideshow" lag.) – Ben Jones Feb 24 '15 at 1:52
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The solution I came up with (that I'm not happy with, but works) is to duplicate the slide, ungroup everything, adjust opacity for the things I want dimmed, and transition between slides with dissolve.

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