Photographic question: How to make such side light? With what equipment? Two questions.

This is a photo of a crooked cat, and the shooting parameters are all there. (Address: /6004682/60254 18/)

Let's start with the lights. Backlight, full power output. There may be cover.

In addition to equipment, crooked cats use D3S+SB900, 70-200 nickels. For the light beam, if there was no fog at that time, props such as cigarette cakes might be used.