The field PhotoPath1 comes from a query that pulls the actual file path, adds the quotation marks and replaces the slash with a double slash. So {MERGFIELD PhotoPath1} produces:

"Q:\\RVA\\00-Structures\\Henrico 2015 Traffic Pole Inspxn\\Inspection Photos\\2015_1105_Base Inspections (Utz and Mercogliano)\\PB050025.JPG"