2 lights as a key, and kick is probably the foundation of all of my location work (inc "boudoir" which is s term bent out of all shape these days tbh). I'll sometimes add a third light as fill - bounced off the walls/ceiling behind me if it's white, or with a 120 octa if the walls are brown (these are the choices - white walls, or stained wood panels
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Apart from that optional fill light (and I often just use the ambient as fill anyway), I haven't used a softbox on location in years. Inside, I'll try and use Fresnel-focused incandescent or LED spotlights. I'm often exposing for the practical lights in the scene anyway (table lamps etc) and so a 650 Watt incandescent spotlight will do just fine. As I'm often placing the key and kick precisely using the focusing mechanism and the barn doors, being able to see the light is a real bonus over flash (if you're using a softbox, it's a very broad and vague light and easy to place - plus the modelling lights actually produce a dimmer version of the flash light in a softbox, so using flash isn't really any harder than using a continuous light in the same softbox).
If I need the power to control excess daylight though, I'll use flash, and to mimic those Fresnel spotlights, I use Godox AD200's with some DIY barn doors or an AD600 with a black reflector and barn doors from Aputure. A black reflector dish blocks the light from illuminating the entire room, whilst not making the light source bigger (and so ruining my shadow edges). I very often make my own sunlight by placing an AD200 outside up high, with a warming gel on it. If you understand lighting, you'll spot straight away that the light is not 93 million miles away, but most people accept it.
Here is a collection of images in this style. Some shot with Fresnel spots, (a combination of incandescent and LED) and some shot with flash, mostly AD200's with the Fresnel (Speedlight) head on. Some are a combination of both, and daylight mixed in etc. No softboxes though
WARNING: These are very definitely not safe for work. Click this at your own risk. You may see nipples. And bums (and apparently, your head explodes or something). If you then click on my profile and look at the rest of my stuff, you're definitely dead, and it's your own fault.
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