The Iris is a classic silent film wipe or to-black transition, here lacking some important controls.

I'd like to begin an Iris-out, but then HOLD for a start-end keyframe duration-- then continue out.

Current Iris is also lacking the INVERT checkbox found on many.

Finally, a TARGET function to shift coordinates- which allows the center of the iris to be right over a face or other important focal point in the frame-- not just dead center.

Best, as always,
Loren