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wll · 09-15-2009, 10:14 AM

The circled area is what concerns me ... is there a masking technique that I should know about :- )

Image was shot 1600 ISO, Pentax K20D, 125fps, and f3.5, 50-135mm lens (I know the image is not sharp, just for demo purposes).

Anyone feel free to have at it, just tell me what you did.

wll

RBellavance · 09-15-2009, 10:23 AM

This looks like the K20D "high-ISO magenta cast" problem, for which GordonBGood has developped a program. See the following thread on DPReview: Magenta edge tinging at high ISO and a possible solution...: Pentax SLR Talk Forum: Digital Photography Review

philbaum · 09-15-2009, 12:20 PM

Originally posted by RBellavance

This looks like the K20D "high-ISO magenta cast" problem, for which GordonBGood has developped a program. See the following thread on DPReview: Magenta edge tinging at high ISO and a possible solution...: Pentax SLR Talk Forum: Digital Photography Review

I'm having difficulty running the program, any advice appreciated. I have Windows Vista which i'm pretty new to. I've downloaded the 0900 ZIP file to the Desktop user download folder for the program, extracted the ReadMe and a 34KB application file. Then when i click on it to run it, I get back a descriptive text describing what it was intended for K20 and all that, then a Browse option to specify a folder destination. I do the browse thing, click on correct and then nothing seems to happen.

What am i doing wrong, this fix sounds too good to miss. thanks in advance

Mister Horrible · 09-15-2009, 12:26 PM

Topaz Denoise should be able to handle that noise. Have you tried using the "Clean" or the "Color noise" sliders?

If it really won't clean up, why not just make a mask of the area and apply a gaussian blur to that area?

krypticide · 09-15-2009, 12:35 PM

What about selectively removing magenta/purple from that area, or even the photo as a whole?

ivoire · 09-15-2009, 01:22 PM

Do you have photoshop? I selected smart sharpen, 1.9 pixels, 19% and applied it to the full image. then used the selection tool to select the area and ran surface blur radius6 and threshold 12. Next, same 2 previous steps (smart sharpen/surface blur) but to the entire image. Then a 19% shadows and highlights and a slight curves adjust.

Gampa · 09-15-2009, 01:45 PM

Some ideas. First concerns the area you are remarking on. Mask layer, Gaussian blur.

Name: Snake_-Noise-Circled-R1.jpg
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Size: 434.8 KB

Additional idea: Clone left upper area using selections from right upper area.

Name: Snake_-Noise-Circled-R2.jpg
Views: 537
Size: 424.4 KB

Front snake body darkened slightly bringing more attention to snake head and hiding some of the noise in the snake's body.

Name: Snake_-Noise-Circled-R3.jpg
Views: 776
Size: 457.9 KB

Name: Snake_-Noise-Circled-R3.jpg
Views: 776
Size: 457.9 KB

I didn't use any noise software, just a few down and dirty tricks, nothing elaborate. Noise sucks.

Gampa

ivoire · 09-15-2009, 02:03 PM

I like the clone idea as it adds depth to the snake-like body being oof.

wll · 09-15-2009, 02:08 PM

I will give those ideas a try. Sometimes you have to use highISO and although Topaz is great, there is no one solution.

wll

asw66 · 09-17-2009, 07:07 AM

Originally posted by wll

The circled area is what concerns me ... is there a masking technique that I should know about :- )

Image was shot 1600 ISO, Pentax K20D, 125fps, and f3.5, 50-135mm lens (I know the image is not sharp, just for demo purposes).

Anyone feel free to have at it, just tell me what you did.

wll

I enjoy playing with stuff like this (and I use Topaz). Could you please post a better copy without the red outline somewhere?

wll · 09-19-2009, 01:37 PM

Originally posted by asw66

I enjoy playing with stuff like this (and I use Topaz). Could you please post a better copy without the red outline somewhere?

Sorry don't have image anymore, chucked it !!!!

wll

09-15-2009, 10:14 AM	#1
wll Veteran Member Join Date: Nov 2006 Location: Mission Hills, CA Posts: 773	Even Topaz Can't Get the Noise Out What Would You Do ? The circled area is what concerns me ... is there a masking technique that I should know about :- ) Image was shot 1600 ISO, Pentax K20D, 125fps, and f3.5, 50-135mm lens (I know the image is not sharp, just for demo purposes). Anyone feel free to have at it, just tell me what you did. wll

09-15-2009, 01:22 PM	#6
ivoire Veteran Member Join Date: Mar 2007 Photos: Gallery Posts: 3,381	Do you have photoshop? I selected smart sharpen, 1.9 pixels, 19% and applied it to the full image. then used the selection tool to select the area and ran surface blur radius6 and threshold 12. Next, same 2 previous steps (smart sharpen/surface blur) but to the entire image. Then a 19% shadows and highlights and a slight curves adjust. Last edited by ivoire; 11-03-2010 at 08:43 PM.

09-15-2009, 01:45 PM	#7
Gampa Junior Member Join Date: Mar 2008 Location: Cranston, RI Posts: 34	Some ideas. First concerns the area you are remarking on. Mask layer, Gaussian blur. Additional idea: Clone left upper area using selections from right upper area. Front snake body darkened slightly bringing more attention to snake head and hiding some of the noise in the snake's body. I didn't use any noise software, just a few down and dirty tricks, nothing elaborate. Noise sucks. Gampa

09-15-2009, 02:08 PM	#9
wll Veteran Member Join Date: Nov 2006 Location: Mission Hills, CA Posts: 773 Original Poster	Guys, thanks ! I will give those ideas a try. Sometimes you have to use highISO and although Topaz is great, there is no one solution. wll

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09-15-2009, 10:23 AM	#2
RBellavance Veteran Member Join Date: Nov 2006 Location: Near Montréal, Canada Photos: Gallery Posts: 1,716	This looks like the K20D "high-ISO magenta cast" problem, for which GordonBGood has developped a program. See the following thread on DPReview: Magenta edge tinging at high ISO and a possible solution...: Pentax SLR Talk Forum: Digital Photography Review

09-15-2009, 12:20 PM	#3
philbaum Veteran Member Join Date: Oct 2007 Location: Port Townsend, Washington State, USA Posts: 3,659	Originally posted by RBellavance This looks like the K20D "high-ISO magenta cast" problem, for which GordonBGood has developped a program. See the following thread on DPReview: Magenta edge tinging at high ISO and a possible solution...: Pentax SLR Talk Forum: Digital Photography Review I'm having difficulty running the program, any advice appreciated. I have Windows Vista which i'm pretty new to. I've downloaded the 0900 ZIP file to the Desktop user download folder for the program, extracted the ReadMe and a 34KB application file. Then when i click on it to run it, I get back a descriptive text describing what it was intended for K20 and all that, then a Browse option to specify a folder destination. I do the browse thing, click on correct and then nothing seems to happen. What am i doing wrong, this fix sounds too good to miss. thanks in advance

09-15-2009, 12:26 PM	#4
Mister Horrible Senior Member Join Date: Aug 2008 Location: Rochester, NY Posts: 100	Topaz Denoise should be able to handle that noise. Have you tried using the "Clean" or the "Color noise" sliders? If it really won't clean up, why not just make a mask of the area and apply a gaussian blur to that area?

09-15-2009, 12:35 PM	#5
krypticide Veteran Member Join Date: Dec 2007 Photos: Gallery Posts: 1,079	What about selectively removing magenta/purple from that area, or even the photo as a whole?

09-15-2009, 02:03 PM	#8
ivoire Veteran Member Join Date: Mar 2007 Photos: Gallery Posts: 3,381	I like the clone idea as it adds depth to the snake-like body being oof.

09-17-2009, 07:07 AM	#10
asw66 Veteran Member Join Date: Mar 2009 Posts: 347	Originally posted by wll The circled area is what concerns me ... is there a masking technique that I should know about :- ) Image was shot 1600 ISO, Pentax K20D, 125fps, and f3.5, 50-135mm lens (I know the image is not sharp, just for demo purposes). Anyone feel free to have at it, just tell me what you did. wll I enjoy playing with stuff like this (and I use Topaz). Could you please post a better copy without the red outline somewhere?

09-19-2009, 01:37 PM	#11
wll Veteran Member Join Date: Nov 2006 Location: Mission Hills, CA Posts: 773 Original Poster	Originally posted by asw66 I enjoy playing with stuff like this (and I use Topaz). Could you please post a better copy without the red outline somewhere? Sorry don't have image anymore, chucked it !!!! wll

Even Topaz Can't Get the Noise Out What Would You Do ?

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