![]() ![]() The ‘Signal-to-Noise ratio’ (SNR) is a good indicator of how much detail (Signal) is captured relative to the amount of noise in an image. Noise is an artifact caused by digital sensors and is present in all digital images, no matter how low an ISO is used. What is Noise?īefore we get to the meat of this post, it’s important to understand what noise is and how NR works. It’s not as easy as it sounds since proper NR involves careful manual adjustments based on the level of noise present in the image, not just dragging a slider all the way to the right (and no, that does not constitute manual labor lol). Noise Reduction (NR, for short, since that term’s gonna come up a lot in this post) is an oft-misunderstood topic.
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