Hi! I hope you'll help me. I'm fascinated by some shots of star trails and... I wanna have my own Unfortunately my digi cam allows me to take only 2 sec. exposure so it fails in this case. But I heard about program called Image Stacker. Did anyone of you use it? I visited it's website, but I want to have a real, non-commercial review from you mates. The second thought is my Zenith. It has b-setting and it's smallest apperture is f/22. How shoul I set those parameters in night so that I won't overexpose the film (and what iso)? I live in a non light polluted area so light from buildings won't disturb.