This question stems from the answers I received for another question "Is 35mm on a cropped sensor good for fashion photography?"
I have been watching couple of videos where the photographer uses a HSS fill flash to take pictures and the images turn out looking stunningly amazing. For example this video on youtube "Creating Color with Off Camera Flash"
The photographer demonstrates how that the images look flat when the images are taken with just natural light while the pictures taken using flash have good color tones and depth. I wanted to try this approach but then soon realized that my Nikon D5600 (with 50mm 1.4G) does not support HSS.
I started to look for workarounds and found this video High Speed Sync vs ND Filters where the photographer shows that ND filter and HSS flash both can achieve same results.
In other tutorial videos, the photographer simply uses a diffuser and reflector. But most of the time I see the reflector and diffuser being held by a person.
I want to understand when to use diffuser, reflector, ND and fill flash ?
Also If I use spot meter on the shadows of a person's face while I have the ND filter on, then is it a replacement for diffuser and reflector ?