This. Expect to do it twice to really zero in on your correct time. and most people tend to underexpose.
Originally Posted by Aaron Gein
Considering the fact that you should only have to do a step test once or twice I don't think it's so ridiculous to have to turn it on an off every 30 seconds. Just do it and get it over with. Once you find the right time you're good to go. You've probably wasted more time looking for another solution than you would have if you'd just taped the film on and done the step test.