This was an interesting capture tonight. It was taken out doors and I just used the available light for the shot. As you can see, by this fire eaters throat, there is some light. It was a flood light attached to a generator. I used a Canon 70-200 2.8 lens. I set it at 70mm. I used an aperture of 2.8, the shutter speed was 1/125 and the ISO was set at 100. The point of focus was the teeth.