Olympus EE-1 Dot Sight device
Feels like a good idea when You would like to shoot
" from the hip " or above head.
Anything similar that would work with Canon DSLr ?
( lets say with alround lens like 24-70 )
I like my Olympus Dot Site EE-1 (but for a different use: finding the bird with a 300mm lens!). As Bart says, there is no reason why it would not work on any camera with a standard hot-shoe; there is no communication with the body.
Also, Nikon just launched one, the Dot Sight DF-M1 (is it Nikon's week for following innovations from team MFT?!), but that costs significantly more that the Olympus EE-1, which is an unusual twist.