SENHAI Triple 3 Axis Hot Shoe Bubble Spirit Level for Canon Nikon Pentax DSLR Camera (2 Pack) Easily identify if your camera is set up level on a tripod. A must have product for macro shooting. Compatible with most DSLR Cameras with a Standard Hot Shoe Mount. Note: Not for Sony / Minolta Alpha cameras because of different hot shoe design. Made of crystal clear acrylic, being light, in a small size, high quality and novelty design. The spirit level mounts effortlessly right into camera's hot shoe, and it can be easily placed on a flat portion of the camera, which corresponds to the lens axis.