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Difference between revisions of "Digital ISO"
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The article touches '''digital ISO''', i.e. ISO settings for digital cameras. | The article touches '''digital ISO''', i.e. ISO settings for digital cameras. | ||
''ISO'' (international standards organization), in the context of photograph, is a light sensitivity measure. Higher ISOs, generally, require shorter exposure times and allow one to take pictures in environments with low light. Lower ISOs, generally, require longer exposure times. | |||
Historically, in the context of film, the trade-off of higher ISO films (with shorter exposure times) was an increased graininess, i.e. lower resolution. | |||
==General== | ==General== | ||
*ISO adjusts the gain of the sensor. | *ISO adjusts the gain of the sensor. | ||
*Each camera has its own ''native ISO'', which is dependent on the chip, and cannot be adjusted.<ref>URL: [http://www.picturecorrect.com/tips/iso-setting-in-digital-cameras/ http://www.picturecorrect.com/tips/iso-setting-in-digital-cameras/]. Accessed on: 8 February 2011.</ref> | *Each camera has its own ''native ISO'', which is dependent on the chip, and cannot be adjusted.<ref>URL: [http://www.picturecorrect.com/tips/iso-setting-in-digital-cameras/ http://www.picturecorrect.com/tips/iso-setting-in-digital-cameras/]. Accessed on: 8 February 2011.</ref> | ||
* | *Shooting below the native ISO degrades the picture.<ref>URL: [http://www.cameralabs.com/forum/viewtopic.php?t=4503 http://www.cameralabs.com/forum/viewtopic.php?t=4503]. Accessed on: 9 February 2011.</ref> | ||
==Rebel XSi== | ==Rebel XSi== | ||