It is often difficult to capture fire with strobes or flashes. To get good images of fire it is best to use natural light, and let the shutter stay open as necessary. There are circumstances however when you may need to use strobes to light people or places, but need natural light to capture the flow of fire.

A local bartender named Shawn Horgan from the Alehouse in Saint John, New Brunswick asked me to do a shoot of the above drink, lit on fire. We lit the scene and subject with strobes, but found that the fire was very weak in appearance. An easy fix was to create two exposures; one for the subject (strobes), and one for the fire (natural light). As soon as we took the first photo with the studio lights we immediately took a second photo in Aperture Priority mode with no flashes. The result of the second photo was a nice flowing stream of fire. Since the pictures were taken so quickly one after the other, the subject didn't move at all.
In Photoshop, I simply cut out the fire and pasted it over the first photo. The results look realistic, and everyone involved was happy with the final product.
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