This process leads to a strong amplification of the electronic signal recorded by the sensorĪnd this amplification creates an increase in digital noise, which results is an image that looks 'grainy', which is very annoying.

In low light, however, the camera has to counterbalance the lack of Normally it isn't possible to notice it,īecause with a good light condition the camera sensor works well. In digital photography the noise is given by the electric current passing through the sensor. If you are not interested, you can skip the next chapter by clicking here. Smooth and PhotoComix Smoothing and we'll go to describe them in this tutorial, but first let's These three noise reduction filters are called Smooth ,

Among them, there are three that are used to remove digital noiseįrom photographs taken with a high ISO values. It is a free plugin for Gimp, with over 500 filters. Gimp doesn't provide a good filter for digital noise reduction, fortunately there is G'MIC.

Gimp tutorial: noise reduction with G'MIC Tutorial for high ISO digital noise reduction with Gimp's plugin G'MIC.

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