The D90 can be used with the following
The principal features of these flash units are listed below.
| Flash unit |
|
|
|
|
| |
Feature |
|
| |||||
Guide No. 3 |
| ISO 100 | 34/111 | 38/125 | 30/98 | 21/69 | 10/32 |
| ISO 200 | 48/157 | 53/175 | 42/138 | 30/98 | 14/49 | |
|
| ||||||
Auto power zoom (mm) | — 4 | — 5 | |||||
Wide panel (mm) | 12, 14, 17 | 14, 17 | 14 | — | — | ||
|
|
|
| 7 ° down, 90 ° up, |
|
| 60 ° down (toward |
|
|
| 7 ° down, 90 ° up, | 90 ° up, 180 ° left, |
| lens light axis), | |
Head rotation | 180 ° left/right | 180 ° left, | 90 ° right | 90 ° up | 45 ° up (away from | ||
|
|
|
| 90 ° right |
|
| light axis) |
|
|
|
|
|
|
|
1 If a color filter is attached to the
2Controlled remotely with
3m/ft., 20 °C (68 °F),
427 mm zoom coverage.
5 24 mm zoom coverage.
When mounted on a
DUse Only Nikon Flash Accessories
Use only Nikon flash units. Negative voltages or voltages over 250 V applied to the accessory shoe could not only prevent normal operation, but damage the sync circuitry of the camera or flash. Before using a Nikon flash unit not listed in this section, contact a
AGuide Number
To calculate the range of the flash at full power, divide the Guide Number by the aperture. For n example, at ISO 100 the
position); its range at an aperture of f/5.6 is 38÷5.6 or about 6.8 meters (or in feet, 125÷5.6=approximately 23 ft. 7 in.). For each twofold increase in ISO sensitivity, multiply the Guide Number by the square root of two (approximately 1.4).
234