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04/22/2007 08:48:26 PM · #26 |
| Could someone please elaborate on why under exposing causes more noise. Please. |
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04/22/2007 09:49:57 PM · #27 |
Originally posted by PaulE:
Could someone please elaborate on why under exposing causes more noise. Please. |
Think of the final result as "signal plus noise." Noise is constant, for a given set of exposure conditions. Signal is your image data. If you reduce the amount of image data, the proportion of data (signal) to noise is reduced. This is referred to as the signal-to-noise ratio, or S/N.
In order to maximize the S/N, Expose to the right. This way, you maximize signal, and thus maximize S/N. |
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04/22/2007 10:10:06 PM · #28 |
Thanks for the good link  kirbic. We used to joke that S/N ratio meant Smoke to Noise, a left over from my music studio days.
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05/04/2007 06:48:21 AM · #29 |
Noise vs grainy and DOF
Reduce noise higher Iso get Grainy or higher aperture the DOF suffer.
So it is a Catch 22 to balance the noise, grainy and the DOF in a Shot! |
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