The present invention relates to an apparatus for mounting a film transparency into a slide mount to prepare a photographic slide. The apparatus is useful for preparing a photographic slide for a slide mount of the type formed of upper and lower frame sections connected along an outer border to define a pocket therebetween. The slide mount also includes a slit adjacent to the outer border to separate the upper and lower frame sections to define a first insertion opening adjacent to the slit and a second insertion opening into the pocket of the slide mount. Cooperating film guides are positioned adjacent to the second insertion opening to guide a leading edge of the film transparency, which is inserted into the pocket of the slide mount, through the second insertion opening of the slide mount.