When Friese=-Greene is filming in the park his camera is visibly wobbling requiring he steady it by putting his hand on it. Yet when the angle showing this changes suddenly his camera has stopped wobbling yet when the angle changes back his camera has stated wobbling again.
When Friese-Greene is seen filming in the park, some young children rush up to see what he is up to. When the camera cuts to show him filming from a different angle the children are gone but are back there again when the camera cuts back to the original angle.
In 1915 when Green's three eldest sons join the army, the landlord's agent mentions that the Spanish influenza is going around. In actuality the Spanish influenza did not begin until 1918.
The middle-aged Friese-Greene is shown meeting William Fox-Talbot, who actually died when the former was only 22.