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Old Aug 2, 2002, 3:20 AM   #1
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Dear Steve,

I had saw the night shot sample of Sony Cybershot DSC-P9. but i don't what the mean of "Avail.Light, Night Scene, ISO 100" on the bottom of the night shot thumbnail. can you tell me? thank you....
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Old Aug 2, 2002, 5:25 AM   #2
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Avail.Light = no flash
Night Scene = shoot @ night (ie not daylight)
ISO 100 = CCD (film) sensitivity, the lower the better, ie less grain (noise). Sometime also known as ASA (different scale) on film boxes

[Edited on 8-2-2002 by NHL]
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Old Aug 2, 2002, 7:18 PM   #3
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NHL, Thank a lot... you are my god...
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Old Aug 2, 2002, 11:38 PM   #4
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Years ago, in the age of photography when there was a camera and film and a darkroom/tent, someone brilliant decided to package film rather than the photographer having to make his own coating, smear it on a plate, and expose/develope it.

Now along came this smart guy (probably some guy who lived in Rochester, NY) and packaged bulk film plus sold cameras also to put that film into that camera.

Now then, some other smart guy decides to do the same thing!

We need a STANDARD for these films. So fiilm was intorduced to the ASA system..IE: American Standards Association.

Now, as years go by, the rest of the world needs to figure out what America is doing and they come up with the International Standards Orginization or ISO.

ISO and ASA are equal and designate the same thing!
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Old Aug 4, 2002, 10:45 PM   #5
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Interesting history... but didn't the German DIN standard precede the ISO as well?
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Old Aug 5, 2002, 8:31 AM   #6
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"Now, as years go by, the rest of the world needs to figure out what America is doing and they come up with the International Standards Orginization or ISO"

i think it should have read "as years went by the world community figured that standards were necessary in order to facilitate research, design, manufacturing, and trade. thus the ISO was formed."

it's a big world out there

http://www.iso.ch/iso/en/aboutiso/in...owstarted.html

i work in one of the only industries that is still american standard tooling and measurement


[Edited on 8-5-2002 by sjms]
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Old Aug 5, 2002, 8:39 AM   #7
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You forgot us photographers as well:

dpi, lpi, ppi... may be we should go metric?
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Old Aug 5, 2002, 9:34 AM   #8
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personally i like the term pica in the printing trade.

these are printing trade standards we as photographers have embraced them for a measurement of resolution.
http://www.utads.com/advertise/guideline/terms.html
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Old Aug 5, 2002, 11:00 AM   #9
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... Now let see if they translate all that into an ISO document !!!

LOL
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