His photographs are held today by collections including the Khalili Collection of Hajj and the Arts of Pilgrimage,[6] the Victoria and Albert Museum,[7] the Reiss Engelhorn Museum,[3] and the Harvard Fine Arts Library.[8] The curator Claude Sui describes Sadiq's achievements in photography as very significant: "[T]he sheer quality of his photographs is evidence of his talent in this field and reveals professional standards in his handling of the wet collodion procedure".[1] His photography reflects both a cartographer's awareness of spatial relationships[5] and a devout Muslim's connection to the region, culture, and people.[1]