The Profoto 1000W flash is too bright? The ND filter is your friend!

We had this question a few times, "Hey, I want to get the 5' Octa close to the model and shoot at f4 but it's way to bright!"  OK, so you can't use your shutter speed to cut down your exposure as you must stay at around 1/125sec for the flash sync and you're already at ISO 100.  You need an ND filter!

Photographer Neil Van Niekerk explains it really well with examples here:

http://neilvn.com/tangents/using-neutral-density-nd-filter-control-dof-with-flash/