No controversy, if you read the above posts, you will see where Dave commented on the last few seconds of the video clip where it shows a man next to Ruby handling an object. Those few seconds on their own do not determine if the object is a camera or not, but what appears to be the same man seen earlier in the clip at the 50sec mark is holding what seems to be the same object to his face, like a camera.
The camera may belong to that man or may not, we don't know.
As far as the Minox relevance and similarity of the camera, here is Detective Gus Rose on property from the Paine household;
"We found this camera and of course, we brought it and a whole lot of other property in, as possible evidence in the case. And, uh, while we were marking the evidence for later identification by us to be used in evidence we did, Stowall and I, did take a close look at this Minox miniature camera and it did have a roll of film in it. As time passed and after the Warren Commission was appointed, uh, a couple of F.B.I. agents made three different trips to our office to talk to me about this camera. They said that after they had received all the property they found that I had made a mistake, and that really wasn't a camera, it was a Minox light meter. However, as I told them at the time, I was sure that I had not made a mistake, it definitely was a camera and definitely did have film in it. However, they wanted me to change that in our property invoice to read Minox light meter and not read Minox camera. We never did change it. Uh, Captain Fritz instructed me if I was sure I was right not to make any changes in any reports, to stay with what was right."