That's it. I have a large group still shot of a graduation class that I am panning and want to mask out the group (very lightly) and focus (oval) on one face.
No glow, fade or fancy frame, just a clearcut oval.
Any shove in the right direction would be appreciated.
Cookie Cutter. Place identical copies of the still on two tracks, one above the other. Apply the cookie cutter effect to the upper still, then do whatever lighting effect you want on that clip, or darken the other, or whatever you decide looks good.
Kelly's technque works well. I duplicated a photo track, reduced the opacity of the lower to about 50%, then applied the Cookie Cutter [remove all but selection] to the top track. Since my photo is a line of friends I used keyframes to move the highlight over each of us in turn. It was very easy and only took a few minutes to get the effect. With just a little extra work, I added each person's name as the lightlighted section paused.
You can also use a single track, use the cookie cutter and have a large border that can be any color and transparency. It can appear to "reduce the light" on all but the item highlighted.