Arrived today for our 'Scholar' microscope, would disagree with previous comments. The housing is easy to assemble but the instructions must be followed to secure a tight fit, it is not just a matter of putting the adapter on and tightening. The single screw uses a clamping system which secures the tube centrally to the microscope housing and is VERY solid, if not then it has not been constructed correctly. Our camera is a Nikon D5100, manual setting with live view and the camera screen swivelled from the camera back for easy view. The camera screen can be magnified so that the focus can be adjusted accurately via the microscope. There is a remote control setting on the camera which is best used to fire the shutter, though pressing the shutter with the button works fine. These adapters can be expensive and for £50 this is value for money. It comes with an extension tube (2 parts), a lensed (x 4) photo eyepiece which is integral to the adapter, to match the image from the stereoscopes.