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08/26/2005 11:12:07 AM · #1 |
| I feel so dumb asking this question, since everyone else seems to know... How am I supposed to find the "ISO" on my picture? I don't even know what it is. |
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08/26/2005 11:13:49 AM · #2 |
Most any viewer you use on your computer will be able to display this info. Look for a "get info" or "get photo info" menu item, or something like that. You may also see a reference to EXIF info. If so, view it and look for the info you seek.
Let us know what OS and software you use to view pics and we can offer specific help. |
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08/26/2005 11:15:06 AM · #3 |
In the film world it's the speed of the film. In the digital world it's how sensitive to light the sensor is. The higher the ISO the greater the sensitivity to light.
This info can be found with the rest of the EXIF information (shutter speed, aperture etc) attached to an image.
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08/26/2005 11:17:22 AM · #4 |
Originally posted by cpanaioti:
In the film world it's the speed of the film. In the digital world it's how sensitive to light the sensor is. The higher the ISO the greater the sensitivity to light.
This info can be found with the rest of the EXIF information (shutter speed, aperture etc) attached to an image. |
Heh. In the film world, it's how sensitive the film is to light.
"speed of the film" is the same thing as saying "speed of the sensor" really.
Just clarifying that ;)
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08/26/2005 11:25:12 AM · #5 |
It appears your camera can be set to ISO's 100, 200 and 400.
Specs from dpreview.com
Click the question mark next to "ISO Rating" on that page for another explanation of ISO.
You are essentially working with three variables when you take a photo:
1. How wide open your lens is [aperature]
2. How long the shutter is open when taking the picture [exposure time]
3. How sensitive the recording medium (film or sensor) is [ISO]
Changing #1 will alter the depth of field--the acceptable in-focus bits of your image.
Changing #2 will alter how motion is or is not stopped.
Changing #3 will alter the possible combinations of the other two and possibly how crisp your image is in relation to "grain" or "noise"
All 3 of these variables are always present. Understanding what they are and how they work together is fundamental to (consistently) getting the results you want under varying conditions of light and motion. |
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