Gold Is Where You Leave It - S1-E19
Visible crew/equipment: Just before Buck tosses the barrel at the bad guys, a film crew member's shadow is visible on the adobe ruin's wall.
The Kinsman - S1-E20
Visible crew/equipment: In the final scene, light patterns from studio reflectors are moving on the sleeve of Blue's shirt. He's on horseback in the middle of the desert and is nowhere near water, shiny metal, or anything else that could cause such light reflections. (00:40:50)
Visible crew/equipment: When Buck and Manolito finally meet up with John, Blue, and the other men, Buck hands over Olive to Sam, and in the next shot of Mano and Blue the boom mic dips into view at the top of the screen. (00:43:45)
Visible crew/equipment: When Buck and Manolito are riding back with the little girl, right after Big John sees them, a white vehicle appears at the left of the screen. (00:54:00 - 00:55:00)
The Legacy - S3-E11
Visible crew/equipment: While Burnett sits in the hotel room chair talking to Trice, an equipment shadow moves across the top of his head. (00:26:15)
The Guns of Johnny Rondo - S3-E18
Visible crew/equipment: When Rondo and his son Dan ride through High Chaparral's gate, there are tire tread marks visible in the dirt.
Visible crew/equipment: When Sangre attacks the soldier and the man's rifle falls during the fight, the shot cuts to a close-up of the gun - and we can see several white blocking marks chalked on the floor beside it. (00:33:50)