1, automatic flash:CANON PowerShot SD400 Charger that is the next popular lit some of the case (automatic mode) automatically turn off the flash, and in the absence of sufficient light automatic flash.
2, Forced Flash: the flash in any case, the fill light will be lit. But this feature backlighting and we only used when the backlight side. Example: the main man --------- ----- mainly because of the backlight is not clear when the person's face to see, you need to flash fill light to achieve facial detail, so that viewers know the film is who.CANON PowerShot SD300 Charger
Why use flash fill light? A: Because people do not light (as light as the moon Why, because it is a reflection of the sun's rays, shooting, were the same)
3, the force does not flash: the flash in any case, not all flash. This feature is most often used in cases of: aquarium, or the antique galleries, etc., (as fish and aquarium use special glass antiques with people separated, and in indoor low light situations The camera CANON PowerShot SD200 Charger flash automatically lit to fill the glass optical ------ This will leave a large reflective points, which directly affect the image quality of photos and details.)
4, night mode: Slow sync flash function is also called (with a lot of friends at night time, of shooting the subject (people) are very clear and there could not see what the background or the background only a few scattered light, specifically what something not clear) Slow sync flash function: that is the time at night while the camera shutter open flash flash, due to inadequate lighting at night, the camera will reduce the shutter speed to let more light into the lens, flash slow sync ---- - flash fill light on the human right scene, and slow sync is not King who (when using this feature to note - to use a tripod while the camera shutter closed before any part of your subject can not move )
5, Red-eye reduction function: (due to poor lighting at night, the human eye pupil to be enlarged in order to absorb more light look at objects in the camera flash because of lack of light lit the fill light, while the human eye in the case of to light when the pupil will soon shrink to reduce the glare of the eye injury, this time around the congestion of people's eye pupil (pupil contraction of the time) camera is just the moment when the shooting eye congestion down to form a red eye phenomenon). Is the camera's flash when shooting the photographer pressing the shutter is the first pre-flash (and strobe, etc.) before people's eyes there is a process of adaptation (when the eye when the light above the face v. - - pupil contraction, hyperemia, after) the flash (which is the second time) shooting. But sometimes we use the results of this function is not obvious, or even not so (mainly because of the blood flow is not pre-flash flash short time.) Call us a good method: shooting people in the eye lenses do not go as far as possible (because the lens next to the flash) perspective a little bit away, as long as light can shift the lens to see the line, because the human eye by the glare will be much smaller. Pupil contraction and the magnitude of congestion will not be so large, can be very effective red-eye phenomenon to avoid ------ we try.CANON Battery Charger
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