35 mm Slider like OHP transparencies casts an images but they have different uses and properties. They are used to show an actual photographic images in the dark room. With development of new software program it is easy to transfer computer generated visuals into sliders. Of course slider have better impact and attraction than OHP transparencies but they are expensive to use. To make their use more effective.
a.Use soft cloth to clean the dust on leans.
b.Use a remote control device with a long cord.
c.Talk ot the audience not to the screen.
d.Be prepared to hold teh attention of audience without slides even if the power fails.