Whoever kept informed annoyed that his images are oblique, that seawater rausläuft left or right of the image, or it (like me) just do not riff to keep the horizon in the straight, I recommend this digital level. I like to look at snapping directly through the viewfinder, while the LED's not really bring me much. Here it is really nice that a beep will alert when the right angle is achieved. The Ergebis convinced horizontally and vertically! Watch out if you want to store the plugged scale with with the camera again. There is a danger that they might accidentally break from the hot shoe. Otherwise, it is sufficient firmly anchored. On my EOS 550D nothing wobbles. It is advisable based on the small size, they stow away always in the same place, because such a small part can easily be lost. The short beep not annoying and loud enough for me. An automatic shutdown after a certain time would have pleased me very much, in order to conserve its batteries. This, however, can easily switch. I use the Kaiser Digital Level very very much and it has become my constant companion.