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I have used denoise and I can say its good for the most part. Of course for any tool you need to understand what situations it works best. As far as the sharpen goes, It does fix minor motion blurs and sharpens photos but it is not as easy to control how much. Even the masking is not that good and usually photos don’t look natural. I feel sharpness in photos comes down mostly to your technique and no software can fix that. Noise, yes dentist can help really well.