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The pupil of the eye opens and contracts depending on the amount of light it is exposed to. With bright light, the pupil contracts to let less light into the eye so the occular nerve can interpret what you are seeing. With lower light, the pupil opens wider to allow extra light in, again for the occular nerve interpret what you are seeing. The reason for sensitivity to camera flashes is a matter of timing. The pupil simply cannot cantract fast enough to prevent the extra light from entering into the eye. If you notice on many cameras they have "red eye reduction" feature. How this works is by shining a red light or activating a pre-flash, a second or two before the picture flash. This allows the pupil enough time to contract some before the picture flash. I know, even with red eye reduction, the flash is pretty intense. The fact is even on a bright sunny day, if you look directly at a flash there is still some sensitivity due to the brightness of most flashes.
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What the Difference between digital camera flash and film camera flash?
Mostly trigger voltage is different. Older film flashes used higher voltages, which if used with newer digital cameras can fry the sensitive circuitry in it. A good practice to follow would be to buy flashes made by the manufacturer of your camera, for your camera. Always remember to check the compatibility of your flash with your camera model.
How can you use flashes in a sentence?
the camera company kodak has very good flashes in there cameras
How is a element used in the industry or technology?
it's used in camera flashes
What is the horror film when the guy has a baseball bat and a camera and the camera flashes and there's someone standing there?
Saw (the first one).
What is panchromatic camera?
Panchromatic camera is a camera which's sensitive to all colors of light. - R. M. Maran
What are the benefits of pictures using flashes?
With camera's using flashes the benefit of this allows a picture to be captured in darkness. The camera flash allows a dim/dark dusky room to be illuminated and all the precious moment to be captured. With the camera flash capturing the image and reflecting it onto the film in older cameras this was the basis to a picture. But now with digital camera's it allows us to get a brighter room.
What are the release dates for The Great Camera Shootout 2010 - 2010 How Sensitive Can You Get 1-2?
The Great Camera Shootout 2010 - 2010 How Sensitive Can You Get 1-2 was released on: USA: 2010
Why won't your camera turn on?
Cameras work on servers sensitive to light.Chances are your camera's servers have been repplaced with plastic.
Why would a camera and film company need so much silver?
Silver salts (halides) are the ingredient of film that makes it light-sensitive.
How do they take your picture on roller coasters?
There is a camera that flashes just before the steep drop which almost every ride contains.
What flashes are compatible with the Canon SX10IS?
Is there any other cheaper speedlights that will work with the Canon powershot SX10I3 Digital Camera
Can a red light camera see the person in the car when it flashes or records?
Yes it can, unless you You have specially tented windows which are illegal.
