Great product for keeping your camera level. Easier to use then single bubble tripod level.

Advantages: Lightweight.
Easy to use horizontal or vertical....


Disadvantages: cost

A great and easy to use product that will confirm your camera is level. No-one likes to ruin a great composition by forcing a crop or straightening in post processing.

Advantages: Cheap for the time saved and peace of mind. Great for setting up panoramic images! 3 Axis rather than one.

Disadvantages: None.

Excellent product. I use mine on a regular basis especially when shooting with wide angle lenses. It is a lot more difficult to correct for wide angle distortion when the horizon is off by a few degrees but with a level image to start with it is much easier to eliminate the undesired effects of barrel distortion. This mounts right on the hotshoe and is a quick and easy level guide. Works much better then the tiny circular bubble level on my tripod and ball head, and much cheaper then the pro levelers.

Advantages: Fits easily into my pack.
Lightweight.
Easy to use and see.

Disadvantages: Over time it can get slightly worn and become looser in the hotshoe. You wouldnt want to carry your camera with it mounted as it might fall off. Not an issue for me as I use it and then stow it.

Well made bubble level. I like the 3 axis for a variety of shots.

Advantages: The three axis levels makes this a lot more versatile when shooting in the field. Should last a lifetime.

Disadvantages: None