Yep, something I learned years ago. A small aperture that works well on a high definition well lit target is a lot of times a handicap in the field. I think this is a reason some people have a hard time with peeps. They're trying to look through a defined hole rather than use a large enough aperture to allow the ring to "ghost". The eye's natural ability to seek the highest concentration of light, which happens to be the center of the aperture, will center the front bead without focusing on the hole.
