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Artificial intelligence noise reduction and artifacts
I have been happily using DXO lately, it's  game changer as I can safely use ISO speeds I wouldn't use before without caring for noise, however lately mostly with their new XD version plenty of artefacts are generated.

Here's a photo taken in sealine area in Qatar: on high tide, the sea creates lagoons among sand dunes, some really awesone photography opportunitis the bright light you can see is Venus not the moon.
Unfortunately noise reduction here created some ugly patterns and I had to turn it off.
It's not the first time I have such issues. 
DXO themselves say they keep older versions of noise reduction in the software in case newer ones have such issues  

[Image: attachment.php?aid=210]

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Very nice place and excellent photo (noise apart). I've tried DXO a couple of times and yes, often is very effective, but in some cases I've seen those artifacts you're referring to.


Sony a6300, Sony a6000, Sony NEX-6, Sony E 10-18mm F4 OSS, Sony Zeiss Vario-Tessar T* E 16-70mm F4 ZA OSS, Sony FE 70-200mm F4 G OSS, Sigma 150-600mm Æ’/5-6.3 DG OS HSM Contemporary, Samyang 12mm Æ’/2, Sigma 30mm F2.8 DN | A, Meyer Gorlitz Trioplan 100mm Æ’/2.8, Samyang 8mm Æ’/3.5 fish-eye II | Zenit Helios 44-2 58mm Æ’/2 
Plus some legacy Nikkor lenses.

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