To begin with no matter what you would do the image was double vision,, the head that has the eye pieces on it and swivels was wobbly and after a lot of frustration it took a bit of time to realize that it was not attached properly only one screw was holding it in place the others were nowhere to be found. After tightening up the one screw, we discovered one other screw but still there were only two screws after the head was tightened up the double vision issue was resolved the image is very clear and the microscope appears to be working. Focus is good, objective lenses work welI, lighting condenser is adjustable and good. I don't know if this was a return as it seems everything else is accounted for. This either occurred in shipping or it was most likely a return that was abused. While it is a nice trinocular compound microscope one thing we do not like is the trinocular setting needs to be changed with the sliding mechanism in the photo,making it so that you cannot view at the same time as using the trinocular for recording. We will more than likely not waste any time or frustration with the phone attachment as we have learned they can be very frustrating we will most likely use the five megapixel USB camera that we have. The inability to not be able to use the trinocular at the same time as being able to view the objective is a deal breaker for us. It makes you wonder why that would be something that would be implemented? We have had similar microscopes and they did not have that implemented and you would be able to utilize both features. Overlooking the fact that the microscope came in what you would consider incomplete or damaged condition, based on the issue with the trinocular we cannot recommend this microscope at this time.