Stephen Eastwood|Beauty and Fashion Photographer

Lighting on black in tighet spaces, and Lighting a pool at night?

Q. How to take picture of model in pool at night?
Pool is light from inside of water.

I would like to use strobes to be able to shoot at 200/f10/ISO 100. But still show the light coming from water

You cannot, get a bigger budget or accept that you will need to slow the shutter, or use a lower f stop higher iso that allows the light from the pool to be exposed properly. If and when I have had to light a pool we placed cheap morris underwater slaves in the lighting sockets of the pool and they fired from the mains lighting the subject. We shot at 100 iso likely f 8-11 and 1/250 The Morris Underwater slaves are these http://www.bhphotovideo.com/c/product/90063-REG/Morris_12270_Underwater_Slave_Flash.html

Q.How to lit model on black paper, to have legs properly lit, but keep paper black.
Flag the light on the bottom, so that it falls off quickly using a black flag or a fanned blackcard. Or use a shiny black or mirror finish, the reflections will not be seen from the camera angle and what you will be seeing is the relfection of the dark black that is far behind the model making it a dark black.

Q. Another how to front lighta model on black background and keep background dark and totally black. (Especially when you cannot have more then 4-5 feet model from background)

Move the light closer in and use the law off fall off, the closer the light the faster the fall off will be, or flag and use a grid or honeycomb on the light and or softbox to control the spill of the light. also use a dense black like a velvet or duvetine fabric which is dark and light absorbing moreso than paper.