I have worked in Photoshop for years, and creating "rounded corners" is one task that I’ve always found myself "struggling to remember," when the time comes to actually apply the effect.
There is no "built–in" filter or option that will automatically do this. You have to manually apply the effect. Fortunately, with a few basic instructions, creating rounded corners will no longer take all afternoon.
The process I am going to show you is just one that I discovered recently. By no means is this the only way to accomplish the effect.
Since the redesign of this site, I’ve been applying a consistent blurred perspective effect to larger images (eg. in posts like this one) that has made a few people curious. It’s fairly simple, but probably not that intuitive to figure out. So here’s an explanation.
There are pretty much only two steps to this effect, the perspective transform and the focal blur, with an optional third, lighting effects.