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Old Dec 10, 2002, 7:03 PM   #1
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I was taking a picture of the christmas in lincoln center at sunset. When I used the flash, the picture was dark. When I turned the flash off, the picture was brighter. Can anybody explain what the flash actually does to an outdoor picture? Also, how do you make a picture brighter without using the flash or photoshop? Is that ISO or WB? Help please!
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Old Dec 10, 2002, 7:04 PM   #2
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sorry christmas tree
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Old Dec 10, 2002, 10:04 PM   #3
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Quote:
Originally Posted by Aaron Singer
When I used the flash, the picture was dark. When I turned the flash off, the picture was brighter. Can anybody explain what the flash actually does to an outdoor picture?
Aaron Singer,
With the flash on, the camera use a high shutter speed because it “think” it can rely on the flash illumination . This high shutter speed make the scene other than the main subject ( ie background, not illuminated by the flash ) turn out to be underexposed. Only the main subject, illuminated by the flash is then properly exposed.

If you main subject is out of reach of the flash, then everything turns out dark :shock:

With the flash off, the camera compute the exposition based only on available light, so everything should be correctly exposed, although there is a risk of blur at low light because the correct speed may be too low for a steady hand held shot.

Quote:
Originally Posted by Aaron Singer
Is that ISO or WB
Thanks!
ISO is the sensitivity of the “film” ,
Low=high definition, but less sensitive
High=high sensitivity, but may lead to grainy pics, more noise.

WB is white balance
The choice of a correct WB give you a correct color reproduction , ie white will appear white (and not blue …etc…)


Take a look at Steve Digicam dictionary:
http://www.steves-digicams.com/digi_dictionary.html
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Old Dec 10, 2002, 10:31 PM   #4
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Thank you for that thorough answer. I really appreciate it! I'll check out the dictionary.
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