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deejjjaaaa · 08-30-2011, 10:41 AM

Originally posted by Class A

None of the papers I've read about demosaicing algorithms (AHD, etc.) mentioned integrated noise reduction.

however Pentax is using NR on the raw data @ high ISO, so that can be as well done not by camera's firmware but off camera and before demosaicing then... and we really do not know 100% if any commercial raw converters are trying that.

simico · 09-06-2011, 01:12 AM

Originally posted by deejjjaaaa

however Pentax is using NR on the raw data @ high ISO, so that can be as well done not by camera's firmware but off camera and before demosaicing then... and we really do not know 100% if any commercial raw converters are trying that.

Bibble is allegedly implementing NR on raw data (before demosaicing) in the next release, as I recall dcraw and Raw Therapee (I think I saw it in one of the developer versions) also have this option.

mysticcowboy · 09-11-2011, 07:50 PM

Write a poem in French then have 5 different translators write an English version. Some of them wouldn't even be recognizable as the same poem! It's the same with RAW processors. Each renders a different version. Sometimes the difference is small, sometimes very distinct.

They don't take the RAW data and make the perfect image from it. They translate the data. Even versions 4 and 5 of ACR output noticeably different renderings. I like Raw Therapee for handling noise, though it's so much easier to use ACR or Lightroom. For maintaining the best detail you can look at Capture One. I used to use it before ACR got updated. I think Capture One still does a slightly better job, but it isn't as easy to use and very pricey. Though, if I were doing high-end pro work, I be all over it

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08-30-2011, 10:41 AM	#16
deejjjaaaa Veteran Member Join Date: May 2007 Location: steel city / rust belt Posts: 2,043	Originally posted by Class A None of the papers I've read about demosaicing algorithms (AHD, etc.) mentioned integrated noise reduction. however Pentax is using NR on the raw data @ high ISO, so that can be as well done not by camera's firmware but off camera and before demosaicing then... and we really do not know 100% if any commercial raw converters are trying that.

09-06-2011, 01:12 AM	#17
simico Veteran Member Join Date: Jan 2009 Location: Budapest Posts: 821	Originally posted by deejjjaaaa however Pentax is using NR on the raw data @ high ISO, so that can be as well done not by camera's firmware but off camera and before demosaicing then... and we really do not know 100% if any commercial raw converters are trying that. Bibble is allegedly implementing NR on raw data (before demosaicing) in the next release, as I recall dcraw and Raw Therapee (I think I saw it in one of the developer versions) also have this option.

09-11-2011, 07:50 PM	#18
mysticcowboy Veteran Member Join Date: Apr 2009 Location: port townsend, wa Photos: Albums Posts: 968	Write a poem in French then have 5 different translators write an English version. Some of them wouldn't even be recognizable as the same poem! It's the same with RAW processors. Each renders a different version. Sometimes the difference is small, sometimes very distinct. They don't take the RAW data and make the perfect image from it. They translate the data. Even versions 4 and 5 of ACR output noticeably different renderings. I like Raw Therapee for handling noise, though it's so much easier to use ACR or Lightroom. For maintaining the best detail you can look at Capture One. I used to use it before ACR got updated. I think Capture One still does a slightly better job, but it isn't as easy to use and very pricey. Though, if I were doing high-end pro work, I be all over it

The difference among RAW processors

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