Seculine AL-105 Action Level without Sound Digital camera level, ideal for landscape, architecture, portrait and sports photographers Ensures your camera is perfectly level, giving users straight horizon lines for perfect composition Visual indicators let you know when your camera is perfectly level Can be used in either portrait or landscape shooting angles. Vertical or horizontal. Easily mounts into nearly every camera hotshoe (not including Sony/Minolta) Easy to see while still looking through the viewfinder. Works horizontally or vertically. Can be calibrated for ultimate accuracy.