When Starsky & Hutch are talking to Dobey in his office, Starsky has his feet on the desk. When the phone rings, Starsky's feet are shown next to the phone but they are wearing different sneakers. His sneakers have 3 white stripes & white around the laces, the shoes shown have 4 white stripes & no white around the laces.
At about 6:18, when Hutch almost falls through the break-away railing on the movie set, the safety cable attached to him is clearly visible.