![]() Noise Correction Method # 2: Smooth, Soften and Jaggy Despeckle Blurs. More noise is removed at lower Threshold settings. To see how Remove Noise works, uncheck the ‘Auto’ checkbox and adjust the Threshold slider, which now becomes available for use. The stuck pixels are removed very effectively but the general noise is still pretty bad in the iso 400 image. Undo the previous Remove noise effect and reapply it (use Effects > Repeat (last effect) or CTRL+F on either image (especially the iso 50 image) and keep a close eye on the stuck pixels. TIP: Use the Navigator to pan to the lower left corner for the first coordinate (Fig 6). ![]() These appear in BOTH the ISO 50 and 400 images, but are more obvious in the low ISO image because there is much less of the more random high ISO noise. To see these stuck pixels make sure you have the Info Docker displayed ( CTRL+F1), then pan down to image coordinates X=248, Y=1641 or X=1823, Y=294 where there are some stuck pixels. ![]() Fortunately for you (but not for me as it demonstrates a flaw in my camera) there are some instances of stuck pixel noise in my sample images. The Remove Noise effect works best on very high contrast noise, such as stuck pixel noise. The effect on the very noisy iso 400 image is negligible, but it does smooth out the iso 50 image a little. In the Remove Noise dialogue, try the ‘Auto’ setting first (check the Auto checkbox) and observe the result on both the iso 50 and iso 400 images. This effect is good at removing some specific types of noise but not so good with other types. You can also use the Remove Noise section of the Tune Noise dialogue ( Effects > Noise > Tune Noise ). The Remove Noise effect is located under the Effects > Noise > Remove Noise. Noise Correction Method # 1: The Remove Noise Effect.
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