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Flash Canon
Flash Set Up Canon (Large)
Flash Photography using External Flash
The first question that comes into the mind about flash photography is whether to use built in flash or external flash. The built in flash may come in handy at different times, but it has some drawbacks. Firstly it is located too close to the lens and gives red eye effect. Due to closeness it also gives very harsh shadows. Lastly the output is not sufficient in most cases.
The external flash comes in to the rescue. It is big and powerful. It has greater output which means more light. The increased light means that a subject greater distance from the camera can be photographed. The exact distance will depend upon the flash being used and the ISO of the camera. More people can also be covered in the photograph using a wide angle adaptor (available with most external flashes).
The flash can also be used for bounce photography i.e the flash is pointed towards the ceiling or any other surface and the light is reflected from that surface onto the subject being photographed. This is only possible via external as the flash head can be rotated can be used for bounce photography, which is not possible with the built in flash. The light thus reaching the subject tends to be very diffused and soft which makes the photographs much nicer.
The external flash can also be used as fill in flash. If your subject is in sunlight of other strong source of light where the shadows on the face are very harsh, the flash can be used to balance the light and bring out the colors in the dark areas.
The external flash is useable with umbrellas. You do not have to be be a professional to use umbrellas. You can put your external flash inside the umbrella and connect it via a wire to the camera. When you take pictures the effect will be of a studio light. Another thing which is very in these days is that you can use a wilress connector with your flash and you do not have to worry about the mess of wires around you.
The external flash can let do many of the creative effects you see in different magazines. The slow shutter effect and 2nd shutter are a few.
The external flash has a powerful pre flash which helps in focusing in very dark or contrast situations. The flash fires a small continuous flash so that the camera can focus.
About the Author
Omar Lodhi is an advance amateur photographer. You can read his full reviews at http://www.myallreviews.com
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Frequently Asked Questions...
is there an external flash for canon eos 450d that can be triggered remotely by the camera's built-in flash?
if it's possible, which flash is it? are there non-canon flash that is compatible with 450d?
Answer:
Good question.
There are several ways to do this.
Unfortunately, I'm not as familiar with Canon line up, but quick search didn't reveal any dedicated flash that work with Canon. I know that Nikon's SB-600 and SB-800 flashes can be used with most current dSLR's as remote slaves triggered by onboard flash (the functionality is built right into the cameras) and they can be used at full TTL compatibility. Nikon calls this CLS, or Creative Light System.
I didn't find any info on Canon having this, but you may want to do a bit more in-depth research here...
The other options are:
1. Digital slave flash. Search for one at B&H, and you'll find quite a few. The problem with many of these is that you have to set them manually for correct exposure using the provided tables or calculators. Though there may be some units that detect both beginning and end of main flash burst and fire/stop the slave flash respectively.
2. Digital slave trigger. This is almost same as digital slave flash, except that it is just a small piece you attach ANY flash to, and when it sees the light from camera flash, it will also trigger the slave. It suffers from the same problem as above. Must set manually.
Just make sure you get a digital one, or one that is able to ignore the pre-flash (or fire its flash on second burst, because first is used by the on-camera flash for metering).
Good luck,
LEM.




















































































