Sometimes the names and labels given to neutral density filters can be misleading and downright confusing. Why is a 4-stop filter called an ND16 and also an ND1.4? I’ll explain it all, and provide a handy reference table.
When building out a filter kit for your lenses, the inevitable question will arise; should I use screw-on filters or square filters? In this article I take an in-depth look at the pros and cons of both types, and discuss some reasons you might want to choose either one of these photographic filter types.