Universal Hot Shoe Bubble Spirit Level for Cameras

Pros: - It is quite smaller than it seems, which is a good thing as it doesn't make it oversand in the camera.
- Its a level... what other pro comments would you want?

Cons: - Its use is limited to liveview, using the camera LCD... you cannot use the viewfinder to frame your picture and check the level at the same time, while taking the shot.

Other: - Although its very cheap, not sure if it worths the price.

Pros: It's not expensive. Seems to be accurate (I placed it on a flat table and rotated it). It can be dismantled easily. The bubble level is a short plastic cylinder inside a moulded rubber housing.

Cons: Could be cheaper, but it's pretty cheap really.

Other: If you want something like this, then buy this one.

Pros: It's cheap and it's useful to check the right position of the camera... as long as you are not watching through the viewfinder (obviously). It's smaller that it seems. 2cm wide x 1.6 cm long. It fits perfect on the shoe. It's easy to put on and put off the shoe. It's small so you can keep it in your pocket or wherever while you need the shoe to connect a external flash.

Cons: Obviously, you can't use it if you need to attach a flash -- but (at least on Canon 550D - Rebel T2) it allows you to use the incorporated flash. No problem here.

Other: Very good price, nice product.

Pros: fits perfectly, easy to use and protects the flash contact of the camera. Very useful when our tripod no bubble or when we stack the camera on a bean bag.

Cons: the bubble is separated easily from plastic when not mounted, you could lose. to be very small is easy to miss when it is not mounted above the camera

Other: very useful, perfect for tripods and video. I recommend it to anyone who has a camera with flash connectors, protecting water and moisture