Today's lecture was on fill flash. Today's assignment was to vary shutter speed during flash exposures and see how much ambient light appears in the image.
All shots were taken at ISO 200 and aperture f/5.6 using a Nikon D3 body, Nikon 70-200 lens and Nikon SB-800 flash. Flash was synched to second curtain. The SB-800 allows exposure compensation for the flash output to be set independently of the compensation set in the camera body.
Subject 1 was photographed to make sure the flash system was working. The first shot is a manual exposure for ambient. The next shots use -3.0 EV set in the flash to minimize output. Click here to see the test exposures.
Subject 2 was photographed with -1.0 EV set in the flash. The first image at 1/500 picks up very little ambient. Subsequent shots changed the shutter speed by one stop to pick up more and more ambient (1/250, 1/125, 1/60, etc.) The last shot at 1/4 is mostly ambient, yet the flash manages to freeze her in motion. Click here to see the sequence of exposures.
Subject 3 was photographed with -1.0 EV set in the flash. The first image at 1/500 picks up very little ambient. Subsequent shots change the shutter speed by one stop to pick up more and more ambient light (1/250, 1/125, 1/60, etc.) The TTL system renders the subject's dark skin with very well (not an unattractive 18% gray). Click here to see the sequence of exposures.
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