For Photinus the Logos was simply a mode of manifestation of the Father, hence he denied the pre-existence of Christ and saw theophanies in the Old Testament as of the father, and the image of the "Son of God" (actually, Son of man) in front of (and distinct from) the Ancient of Days as prediction only.
Photinus believed that the Logos was a manifestation of the Father, denying Christ's pre-existence and seeing Old Testament appearances of God as expressions of the Father. The "Son of God" (actually, Son of man) in front of the Ancient of Days was seen as a prediction only.