Hook a string to each monolight with knots at each foot. Do some testing at different power settings and different <span style="font-size: 8pt; color: black; font-family: Verdana; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"]lengths and different f-stops. Use a high shutter speed(1/160) and take head shots. Open the images in photoshop and do a facemask histogram to find the exposure for each distance/power setting. Once you have this data you have what you need. Set the lights where you want them for key and fill. Now that you will be exposing with more than one light, set your f-stop to the key and take a test shot. It will probably be slightly overexposed. Make adjustment till you have it.


Facemask Histograms for Exposure Control


I hope this link works. You will probably have to register with your e-mail:


http://www.shootsmarter.com/index.php?option=com_content&amp;task=view&amp;id= 116&amp;acat=16


Have fun


Mark