If you’re like me (unlikely), you’d have a whole bunch of old, vintage cameras. Many of them are in good working condition, and I like to run at least one roll of film through each one. However, much common knowledge from the past is now obscure information. For example, flash bulbs come in different types, and one of the difficulty I faced was how the different sync speeds work for different bulbs. Incidentally, I have an old Ilford manual of photography that provides this information, and much more. So here, in what is perhaps the first in a series of useful information, is the Flash Bulb sync information from the Manual.