Photo Identification

Hi everybody - I was born 'KRUSE' in Australia.  Our family line came from Kiel, Schleswig-Holstein, Jutland, Denmark.  My gg grandfather was Johann Heinrich Lorenz Kruse who came to Australia in 1854.  We have some photos handed down through the family simply named 'Kruse Families from Germany' which were taken at the Studio of Alfred LeWitz in Hamburg Germany some time in 19th century.  I can see resemblances to our family but would like to know if anyone may have known of some of my ancestors who could identify just who they are.  His parents were Johann Hinrich Kruse (farmer) and Friederika Georgine Elsabe Schultz born circa 1800.  It seems like looking for a needle in a haystack, but you never know ........