While shooting interiors ( homes, hotels, etc. ) that have windows which streams pools of white-bright light what soft of power does one need in terms of watts/s for strobes ?
At present, I only have 400w/s strobes that I use for Products Shots - They are only useful for early morning / late evening shots and are absolutely inadequate for afternoon shots.
I do not have a place where I can rent lights for testing purposes thus am in need of advice based on your usage and experience.
I shall await your kind replies.
Impossible to say, depends on size of room etc. I once had 13000 j of Bron and when doing very large interiors every j was sent into the ceiling to stop it going green from under exposure, the rest of the room was time exposure.
Things like car showrooms I would light the area near the camera and time expose for the distant parts. No way could you light it all unless you were a Hollywood production. This was in the days of film.
You are going to need to multi expose and use Photoshop to blend.