AlienBees ABR800 Руководство по эксплуатации - Страница 3
Просмотреть онлайн или скачать pdf Руководство по эксплуатации для Вспышка камеры AlienBees ABR800. AlienBees ABR800 16 страниц. Ringflash
Печатать страницуPower Requirements
Each unit arrives with a 15-foot, grounded power cord that connects to the ringflash unit on the
back control panel with a down-angle, standard IEC connector and must then be connected to a 120
VAC, 50-60 Hz power outlet. The units are rated at 3 amps average current, and may briefly peak
at 16 amps input current at the very beginning of the recycle period. The units will draw less average
current if the flashpower is set for lower output and the modeling lamps are off. Depending on the
modeling setting, the units require approximately 1 ampere to illuminate the lamps and maintain the
flash between shots.
When shooting in an environment where a suitable AC power source is not available, we recommend
the use of our Vagabond™ Portable Power System (please see our website or call us for details).
The Vagabond™ System is designed specifically for Paul C. Buff™ units to provide a convenient,
lightweight, self-contained battery power source at a very low cost. In addition, the Vagabond™
battery can be recharged from any source of commercial AC power nearly anywhere in the world.
Multiple Vagabond™ units may be purchased for the price of a single generator or high power true
sine wave inver ter system.
Please contact us to learn more about using a Vagabond™ system with your units!
Ringflash Syncronization
Using the included sync cord, you can directly connect the ringflash to your camera. The supplied sync cord has a 1/8-inch
plug to connect to the sync jack on the ringflash back panel and a PC sync to connect to your camera's PC outlet. If your
camera does not have PC sync, the sync cord can be connected through your hot shoe with an adapter (for our Hot Shoe
Adapter, please see our website). With the ringflash and camera directly connected, the unit will only take its cue to fire
from you. The ABR800 can additionally be fired using the built-in slave tripper which will detect and reliably fire the unit
whenever it "sees" any flash of light from another flash unit - tripped 50+ feet away. This slave allows you to connect one
light in your setup to your camera, leaving the other lights to fire with this slave. The unit will fire at its prescribed settings
simultaneously with the connected unit. The slave is disengaged whenever a sync cord or blank "dummy" plug is inser ted
into the sync jack. Using the remote control jack, you can also connect a Paul C. Buff™ remote to control the firing and/or
flashpower and modeling. Additionally, our CyberSync™ 2.4GHz Radio Remote Control system may be used for wireless
firing.
Using The Ringflash With Your Camera
As with vir tually all studio flash units, your camera must be set to the manual exposure mode with any pre-flash turned
off when using the ABR800. Exposure should be determined using a flashmeter and/or histograms and the camera should
be set to "flash sync speed" (typically 1/125 second). When using the ringflash, you cannot leave your camera in automatic
mode as its internal meter will not be able to detect the light that will be emitted and will thus be set to an inaccurate
shutter speed and aper ture, causing your picture to be overexposed. Fur thermore, when in automatic mode, many cameras
have TTL metering that will send out a pre-flash to read the light, and that signal/flash may fire the unit via the built-in
slave before the shutter actually opens, causing incorrect exposure. When using the ringflash and various light modifying
techniques, the best way to ensure a proper exposure is to use a high quality flashmeter. There are several manufacturers
who offer excellent meters, allowing you to enter the specific settings that you've chosen for a shot and read the amount
of light present. You can use the meter's "test/arm" option or you can connect the sync cord and select the "cord" option.
The meter will indicate the appropriate settings so that you may set your camera accordingly. A reading from the camera
position or from the subject position may be used to determine an overall scene reading. Depending on the subject, you
may additionally want to take spot meter readings.
Our customer service team can help you determine how best to use the unit with your particular camera. Please call
us on our Toll Free Line at 1-800-443-5542 or send us an email at [email protected] if you would like
assistance. We're here, happy to help you, Monday through Friday, from 9:00 am until 5:00 pm, Central Time.
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the AlienBees™ Ringflash
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