Rated 1 out of
not accurate"If you place this item on a hard, level surface, it will rock back and forth. The flange on the bottom that holds it onto the hotshoe is not flat. I compared the results of this unit with a bullseye level I got from Lee Valley Tools, to test its accuracy before I found myself depending on it for an architectural shoot. Not close.
The flange does not fit snugly on one of my Canon bodies, which allows the base with the hump in it to throw off my readings.
The reason for using of these devices is precision. The device is not precision made. Cannot recommend."