Slave flashguns
A slave flashgun Is triggered by the flash from another flashgun. In order to do this the slave incorporates a flash sensor, which reacts to a sudden but bright flash of light.
Flashguns often included quite high-voltage batteries to fire the bulbs; even as late as the 1960s, bulb guns could have batteries of 20 volts or more.
A flashgun that has a circular electronic tube that is positioned around the camera lens or on the filter thread.
Most flashguns today have a zoom function with focal range of 24-105 mm. Depending on the focal length of your lens, the angle of coverage gets adjusted to light up the subject sufficiently.
a second flashgun should be used to fill-in the shadows caused by the main strobe and should therefore be less powerful
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A separate flashgun holds several key advantages over an integral gun. In the first place it isn’t fixed in place so you can put it on a bracket or, with a suitable lead, on a stand.
Bouncing a flash does not mean you drop it from a high building, and you do not need to buy a rubber flashgun.
Canon Speedlites and Nikon Speedlights are small, off-camera flashguns that can provide big results-if you know how to use them properly.
Probably the most useful for digicam users is a portable flashgun which fits to the hot shoe of your camera and has a wider range than the built in flash.
Term used to describe how a flashgun works in conjunction with a camera's metering system to deliver correct exposures automatically.
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Most flashguns for a camera list a rating referred to as a Guide Number, or GN. This number is used for manual settings to determine the proper aperture based on the distance from the subject. Guide numbers are also rated assuming ISO 100 speed film.
It also has a hotshoe, for mounting external flashguns. Unfortunately, the hotshoe is a generic, single-contact type that allows no communication between the flash and the camera.
The do's and dont's of photography with a flashgun
Without any doubt, the worst, most horrible, ugliest way to light any subject is with the little flashgun that now comes built into every camera.
An electronic flashgun feature that allows the flash coverage to be adjusted. Flashguns are usually designed to cover the same angle as a standard lens, so when a wide angle lens is used you may find the edges of the frame are darker.
When performing Automatic Balanced Fill-Flash with TTL Multi Sensor, the Flashgun fires a series of scarcely visible pre-flashes to enable the camera's computer to pre-analyze the scene.
Unfortunately every manufacturer has their own design of hot shoe, so if you buy a flashgun for, say, a Canon DSLR; and then in the future go out and buy a Nikon DSLR your old 'Canon' flashgun won't work on your new Nikon camera.
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I often use my flashgun, even on a lovely day, because catchlights in a subjects eyes can make a photo.
When a modern camera with a multi-segment exposure meter (Matrix) is used with a dedicated flashgun the correct exposure can be obtained for both the subject and background using 'Automatic Balanced Fill Flash'.
Manfrotto Monopod
1 x Flashgun
MacBook
A ThinkTank belt and pouch system holds the monopod, a pouch for each of the flash, the 50mm, spare CF cards, batteries, USB 3G Modem x 2 (different networks), card reader etc.
Make an effective snoot for your flashgun, using just a crisps tube, in less than a minute!
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8 essential technical tips for brilliant macro shots ...
Hot Shoe
Some advanced digital cameras have a clip at the top for mounting external flashguns.
Image stabilization
Some cameras offer a system to reduce camera shake either through controlling movements on the CCD or elements within the zoom lens.
Without flashgun you also can properly light shadowed areas by using an easy trick. Simply use white boards (e.g. Styrofoam board from a building material supply) as reflectors to light your motive properly.
Manualy set the aperture according to the studio flash. If u have a pc socket, its well. Dont use the built in flashgun. Otherwise use it to sync but place a white card in front of the flash. So that this light will not appear into the exposure.
It is a common problem when the flash is positioned close to the lens, as it is on many small cameras. Bounced flash (with higher-end flashguns) helps avoid this.
 See also: Flash, Camera, Photograph, Photography, Digital
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