Wilt wrote in post #14995123
To the main point of this thread, the OP stated "I am looking to upgrade my gear so that I can over power the sun when shooting outdoor portraiture" and ND does nothing relative to helping to overpower the sun...it does not change Ambient:Flash relative ratio. Unless anyone knows of a source of a ND filter large enough that I can gel the sun outside!
Hey Wilt. Set you camera to say, f/8, 1/200th, iso 100. Lets say that's the correct ambient exposure. Now let's say you want to keep f/8, but underexpose the background by about 2 stops. Simple, add and ND filter. Now you need to boost the exposure on you horribly underexposed subject. That's were more flash comes in. You're coming at this from the "balancing ambient and flash" perspective, when the OP wants to knock down the background exposure and keep the subject correct. This can be achieved by simply adjusting flash output, but you have to be able to knock down the ambient first. While hypersync will work, (for me at least) it is a bit of a hamfisted hack that doesn't allow the fine tuning and consistency that simply using adequate light and an ND filter does.