Nikon Creative Lighting System Digital Field Guide by Benjamin Edwards

Author:Benjamin Edwards
Language: eng
Format: epub
Publisher: Wiley
Published: 2012-02-09T16:00:00+00:00

3.12 This image was shot in mixed light with no filter. The background and some of the plate have a blue tone from the sunlight that was creeping through the windows. The warm light on the food was created by the existing incandescent flood lights keeping the food warm.

For more information on using color filters, see Chapter 5.

Using Repeating Flash

Repeating flash (RPT) is an interesting option that allows you to use stroboscopic flashes from your speedlight to record multiple images during a single exposure. This is an easy way to record a sequence shot in one frame, or to be the life of the party as you introduce your handheld strobe light.

The SB-900 and SB-910 are the only speedlights that offer the Repeating flash option. It is available with the built-in flash on certain camera models, such as the D300s, D700, and D90. See the manual for your specific camera model for more details.

To use this feature effectively, a number of calculations and some planning are required. Remember the GN/D = A equation? You’re going to need it to use the Repeating flash feature properly.

The SB-910 can be used as a Master in Repeating flash (RPT) mode, allowing the SB-700 to perform repeating flashes.

First, review the following terms related to Repeating flash (RPT) mode:

• Times. This is the number of times you want the speedlight to flash during a single exposure.

• Frequency. This is how many times the speedlight flashes per second. It is represented in hertz (Hz); for example, 10 Hz is 10 times per second.

• Flash output level. This is the same as setting your flash output when using the speedlight in Manual mode.

To avoid frustration and concern that your speedlight isn’t functioning correctly, remember that all speedlights max out at 1/8 power when using Repeating flash. You need to understand these terms to determine the proper shutter speed and aperture to use.

First, you need to determine what flash output level you want to use. This is where the GN/D = A equation comes into play. As discussed in the beginning of this chapter, the flash output level is the determining factor in how far the subject should be from the speedlight. If you prefer, you can determine the output level based on the subject’s distance.

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