Ntenny is right - the shutter isn't necessarily slow. As he says, the best thing would be to put in a roll of any ISO 100 film, color or B&W won't matter, and go out on a nice sunny day with the aperture at f/16 and the shutter at 1/100. If some clouds show up, change it to f/8. That way all you have to worry about is the distance scale. For best results, do this in early-to-mid morning or mid-to-late afternoon, avoid mid-day. You might end up hooked and keep it for yourself.