The AI stands for Artificial Intelligence, and it certainly hits the mark. Topaz Denoise, does not cause a lack of sharpness, in fact it seems to somehow enhance sharpness. This includes both external plugins and the noise reduction built into Lightroom and Capture One. To say I was pleasantly surprised would be an understatement! All noise reduction software that I had tried in the past had always led to some softening in detail areas and a slight reduction in apparent sharpness. Recently there has been a big advertising push online from Topaz Labs plugins and a lot of positive reviews, particularly for Topaz Denoise AI, so I thought I would download the free trial and give it a go. For the last few years I have used NIK filters Dfine as an external noise reduction filter for high ISO images and been reasonably happy with the results.
None the less I have always found it necessary to do a certain amount of noise control in post processing with most images shot at 1600 or above. Each new generation of digital camera has improved its control of digital noise in high ISO images.
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