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Noise reduction
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Dec 27, 2019 08:49:44   #
dsmeltz Loc: Philadelphia
 
bleirer wrote:
Another fussy way to reduce noise without losng as much detail. is to shoot and blend multiple images of the same static scene. I believe you get 50% reduction for every 4 images. Some cameras have a night mode that does that automatically and yields a jpeg, or it can be done in post.

Several useful articles if you ignore the technically incorrect definition of ISO. https://www.cambridgeincolour.com/tutorials/image-noise.htm

https://www.cambridgeincolour.com/tutorials/image-averaging-noise.htm
Another fussy way to reduce noise without losng as... (show quote)



Beat me to it.

If you have multiple shots from this shoot, you may still be able to do it.

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Dec 27, 2019 08:52:24   #
CHG_CANON Loc: the Windy City
 
kubota king wrote:
After looking at your sample , might have to try Topaz DeNoise 6


Unfortunately, the DeNoise v6 software has been discontinued to Topaz. I bought it back in the 2014 timeframe, maybe earlier. Topaz has changed their software direction since then, where 'plug in' tools like DeNoise they no longer sell / support. Look at "Noise Ninja" as a similar plug-in and / or standalone that is still available, as well as tools from other vendors.

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Dec 27, 2019 08:53:26   #
rlv567 Loc: Baguio City, Philippines
 
grichie5 wrote:
I recently shot a night image of the Christmas lights on display at my Neighbors house. The image, shot at ISO 51200 was amazingly clear and well exposed. A friend reprocessed the image, using, I believe, Topaz AI to reduce noise. His result did substantially reduce the visible noise, particularly in the dark sky areas.

The image included an area of the stucco house and the grill work in the roof soffit. In my original image, the texture of the stucco and the details of the of the soffit grill were visible. In the denoised version he created, these areas were smooth, with no visible detail.

Not being an expert on Denoise software, I wonder if the process of denoising is accomplished by reducing contrast and perhaps some blur. If so,must one choose between having resolution and noise vs less resolution and less noise?
I recently shot a night image of the Christmas lig... (show quote)



I’ve run a lot of tests with denoising software over the past couple of months. The program I find best suits my postprocessing needs is ON1 2020 – but it falls a little short in the denoising area.

It is apparent that the relative efficacy of denoising software varies when used on different pictures. That is to say, the program which may be best on one picture may not be on another. As has been mentioned, one must walk a fine line between noise reduction and sharpness in achieving the “perfect” balance – which depends upon the eye of the beholder!

For me, the choice comes down to two Topaz products, DeNoise6 and DeNoise AI – though one has two choices within DeNoise AI: DeNoise AI and AI Clear. To my eye, AI Clear usually is the best of the three – slightly – and with DeNoise6 and DeNoise AI, it depends upon the picture being processed. Processing the subject picture – only for denoise – I had the best result from (DeNoise AI) AI Clear, followed by DeNoise6, then DeNoise AI.

I must note also that AI Clear does its job much quicker than DeNoise AI. One other factor (whether it’s good or bad?) – DeNoise6 has capability for much “fine-tuning”, not offered by the others, though "auto" also is available.

I certainly recognize that while I believe my testing was definitive, others probably will have different opinions. Also, while there were a number of other programs I tested – all of which make the customary grandiose claims – most were really pretty bad!

I have been evaluating DeNoise AI for a week or so, and was thinking to spend the $51, but now probably will not (the decision influenced by a paucity of funds!).

Loren – in Beautiful Baguio City (where the visitors from the “lowlands” have swelled the population from the normal 400,000 to an estimated 1,000,000 plus over the holiday season)

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Dec 27, 2019 08:55:23   #
mizzee Loc: Boston,Ma
 
Denoiseing does soften your image depending on how far you go with it. Were you on a tripod?

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Dec 27, 2019 08:58:56   #
rlv567 Loc: Baguio City, Philippines
 
CHG_CANON wrote:
Unfortunately, the DeNoise v6 software has been discontinued to Topaz. I bought it back in the 2014 timeframe, maybe earlier. Topaz has changed their software direction since then, where 'plug in' tools like DeNoise they no longer sell / support. Look at "Noise Ninja" as a similar plug-in and / or standalone that is still available, as well as tools from other vendors.


Fortunately - I already have the standalone version of DeNoise6.

Loren - in Beautiful Baguio City

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Dec 27, 2019 09:15:11   #
kubota king Loc: NW , Pa.
 
CHG_CANON wrote:
Unfortunately, the DeNoise v6 software has been discontinued to Topaz. I bought it back in the 2014 timeframe, maybe earlier. Topaz has changed their software direction since then, where 'plug in' tools like DeNoise they no longer sell / support. Look at "Noise Ninja" as a similar plug-in and / or standalone that is still available, as well as tools from other vendors.


I have the version back then along with the other Topaz programs offered then

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Dec 27, 2019 09:25:16   #
CHG_CANON Loc: the Windy City
 
kubota king wrote:
I have the version back then along with the other Topaz programs offered then


If you want, take an image and run through v6 and PM me the results and the original. I can take a crack the same image and PM back a screen print of the sliders for ideas of how / what is impacted by the various options.

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Dec 27, 2019 09:33:52   #
kubota king Loc: NW , Pa.
 
CHG_CANON wrote:
If you want, take an image and run through v6 and PM me the results and the original. I can take a crack the same image and PM back a screen print of the sliders for ideas of how / what is impacted by the various options.


sounds good

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Dec 27, 2019 09:41:12   #
kubota king Loc: NW , Pa.
 
CHG_CANON wrote:
If you want, take an image and run through v6 and PM me the results and the original. I can take a crack the same image and PM back a screen print of the sliders for ideas of how / what is impacted by the various options.


After checking again , I found out that I only have DeNoise 5 , not version 6

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Dec 27, 2019 10:05:16   #
bleirer
 
The topaz Denoise is on sale now for $59, called denoise ai https://topazlabs.com/shop/ I've not used it, been happy with the tools in Lightroom/acr. There are ways in Photoshop to use the tools selectively rather than the whole image if needed but it takes a little work.

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Dec 27, 2019 10:23:24   #
DaveJ Loc: NE Missouri
 
bleirer wrote:
The topaz Denoise is on sale now for $59, called denoise ai https://topazlabs.com/shop/ I've not used it, been happy with the tools in Lightroom/acr. There are ways in Photoshop to use the tools selectively rather than the whole image if needed but it takes a little work.
I bought Denoise AI yesterday. They offered a link for me to share that would give anyone a 15% discount on all prices, including sale. The Sale pricing ends today for the $59.99 sale on Denoise and Sharpen(and others), with link coupon it becomes $50.99. PM me and I'll send you the link. Full disclosure, it said they would give me $10 for anyone buying thru link.

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Dec 27, 2019 10:39:30   #
GENorkus Loc: Washington Twp, Michigan
 
I personally have not upgraded to it yet but several have talked about Capture 1 ver. 20 as having the best noise reduction in the world.

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Dec 27, 2019 11:48:45   #
Nicholas DeSciose
 
You can always make selections and then just Reduce noise in selected areas. Very easy and very practical.

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Dec 27, 2019 12:29:20   #
User ID
 
bleirer wrote:
..............
been happy with the tools in Lightroom/acr.
There are ways in Photoshop to use the tools
selectively rather than the whole image if
needed but it takes a little work.


It would never occur to me to denoise
a whole image. I'll ALWAYS use various
selecting tools to define what area is to
be denoised.

SO ! You raise my curiosity ! Do MOST
users of denoising products just expect
to denoise whole frames ? And so their
opinions about the efficacy of various
denoising products are based on whole
frame denoising ?

As you mentioned concerning selecting
only certain areas for noise treatment
"... but it takes a little work ...". I take
that for granted. Maybe I've mistakenly
projected that onto other practitioners.

What I am asking here is whether
user reviews, and opinions, about
denoising products are typically
based on the "takes a little work"
selective area approach ... or on
global denoising of a whole frame.


This matters cuz praise or scorn applied
to any tool is meaningless without some
context: "How is the tool used ?" "What
is the expected result ?"

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Dec 27, 2019 13:38:03   #
tonyantony
 
i prefer to call noise grain, sounds better looks better.

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