How to Apply Gradient Feather to Image Content in InDesign
Here is a screen capture of a Gradient Feather on a picture frame :

Nothing unusual at first except, it seems it's not possible to apply the effet on the image content alone? I tried using the Effects palette and select the "Image" content alone but all the palette lists is : Object, Fill and Stroke. There is no interface for "Content" or "Image"? If I try apply the effect to the Fill, it's not visible because the Fill is not colored and is sitting behind the image any way. InDesign lets me apply the effect to the Stroke just fine but that's not what I'm after.
I would not mind applying the effect to the Object first and then remove it from the Stroke in the Transparency palette but that does not work either.
Sadly, the Documentation is mute over applying a Gradient Feather to images 😞
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