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Post by Peterj on Jun 22, 2019 20:05:32 GMT
During a behind the scenes photo walk at the Arizona Sonora Desert Museum our instructor, Jay Pierstorff, mentioned the subject and how impressed he was with results. Since I was shooting aperture priority with auto ISO (there was little time to change settings) I thought a trial was worth it. It was super simple to clean up the ISO 800 shots which had significant noise. I didn't think that I'd have much noise in ISO 100 captures, bit Thought a try was called for. I'm amazed at the noise reduction and clarity / sharpness increase. Here are 2 screen captures:
100% view
entire window 400%
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Post by Bailey on Jun 23, 2019 0:21:14 GMT
Hi Peter,
An interesting comparison, at least for me, is how it compares to what can be done using ACR's Noise Reduction.
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Post by kdcintx on Jun 23, 2019 0:40:06 GMT
Tony - That is impressive for sure. Thanks for sharing your results.
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Post by Peterj on Jun 23, 2019 2:21:21 GMT
Bailey and anyone else interested ... the original raw file and the 2 screen grabs can be found on Cloudup |
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Post by Bailey on Jun 23, 2019 2:50:49 GMT
Thank you for sharing the raw file Peter.
I opened it in ACR and I see the ISO is only 100 and there is not much noise in the image. I would think any decent noise removal application (ACR, Topaz etc) should be able to remove the noise from an ISO 100 image.
In this raw image it is fairly quick and easy to remove the noise by adjusting the Luminance and Colour sliders in the Noise Reduction panel.
Anyone with ACR can do their own comparison and judge for themselves. The only way to compare images on screen is to view them on the same screen.
I'm not a big fan of uploading images for online comparisons because I have no control over the monitor calibrations/settings of whoever is viewing the images.
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Post by Peterj on Jun 23, 2019 3:33:56 GMT
Thank you for sharing the raw file Peter. I opened it in ACR and I see the ISO is only 100 and there is not much noise in the image. I would think any decent noise removal application (ACR, Topaz etc) should be able to remove the noise from an ISO 100 image. In this raw image it is fairly quick and easy to remove the noise by adjusting the Luminance and Colour sliders in the Noise Reduction panel. <snip> Fair enough - as I stated I wanted to see how much noise was created when using camera's base ISO
Here's an 800 ISO comparison. Only noise reduction and sharpening were applied in ACR. To me Topaz did a superior job.
Topaz Denoise AI ..................Original raw............................ACR
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Post by Bailey on Jun 23, 2019 5:25:47 GMT
I'm not sure what you are trying to show/prove here. You haven't said what settings you used or provided the raw file so anyone can verify what you have done. Maybe the settings you used are optimal, maybe not. When I see comparisons like this anywhere, not just here, I take them as the author's opinion (hopefully unbiased and without a hidden agenda), and nothing more. As I mentioned earlier, the only way to properly compare images like this is for someone to do it themselves on their own screen. The colours, brightness, clarity you see on your screen is most probably not exactly what I see on my screen because of the reasons I posted earlier. If you genuinely believe Topaz does a better job on all images under any conditions, then it should be able to stand up to proper scrutiny by others on their own screens. In ACR I have very rarely had any problems removing noise with images in relatively low light up to ISO 1600. I don't normally shoot using a higher ISO because the noise from my camera sensor then becomes significant. For a proper evaluation I would need to compare a lot more than 1 or 2 images and under different lighting conditions before I could even attempt to make a definitive conclusion. hth  |
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Post by Peterj on Jun 23, 2019 18:45:32 GMT
I'm simply sharing my experience with Topaz Denoise AI - which is pretty impressive to me. I don't claim to be an expert using ACR - which I've found more effective than On1 for reducing noise.
After these trials (I've used it on ~50 images of all sorts) Topaz Denoise AI will be part of my work flow.
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Post by srmoment on Jun 24, 2019 12:14:10 GMT
I have also found that Topaz denoise (and AI) does a better job than Elements and OnOne in removing noise and in toning done over-sharpness.
On my screen there is a noticeable difference and I have noticed a difference when I print to a photobook.
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