ISO 800+ -- high noise

Started 2 months ago | Discussions thread
Chaplain Mark
Chaplain Mark Senior Member • Posts: 5,731
Re: ISO 800+ -- high noise

It's an issue of signal-to-noise ratio.

Your fundamental problem with noise was due to the low-light conditions in which the shots were taken.

The less light available to capture at the moment of shutter release,  the noisier the shot will be, regardless of ISO value.

The higher ISO you used for those low-light shots served not only to brighten the images, but also to amplify the noise.

You can run your own demonstration of signal-to-noise phenomenon by taking shots at the same ISO you used in the noisy low-light shots, but taken in bright lighting conditions,  where your subject matter is brightly lit.

Your brightly lit shots will be much less noisy, given any particular ISO value.

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Thank You,
Chaplain Mark
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