paul_delamusica

<p>Hi,<br> Decades ago, I used a slide film that produced black and white images. I mean it was either black or white and no gray at all. I recall that on the developed film, the black part of the image is produced by a silver-colored substance that completely blocked out light.<br> <br /> I have now totally forgot about the product name. Any other truly black and white slide or film would work for me too. Can someone help me with some suggestions?<br> <br />Thanks!<br> <br />Paul</p>