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July 21, 2017, 06:30:16 AM *
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Author Topic: Challenge # 80 The Mystery of the QSN file.  (Read 276 times)
Fred A
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« on: June 30, 2017, 01:21:16 PM »

                                                                 The  QSN file.

I shutter to think what would happen should the QSN fall into the wrong hands.
Therefore, we have hired 3 very prestigious detectives to guard it.

Sheerluck Holmes.
The Pink Panther's cousin, The Cyan Cougar;  and James's indefatigable brother, Treasury Bond.
We wish them luck!

The qsn files are somewhat misunderstood adjuncts to Qimage Ultimate's performance.
Let me set up a situation which is subtly handled by Qimage in a way you never knew.

I have images sent to me from folks who wonder what settings will get the best from the image from their "new" camera which has  triple the resolution of the old camera. They look awful, noisy, grainy and soft.

QSN to the rescue.
To simplify, the qsn file is a custom file of 2 essential presets + some  non essential ones.
Preset 1 is pre-sharpen.  Based on the emails I get, it needs some explanation.
1) Raw images are inherently soft. They come that way. We use a preset of DFS sharpening ( a little) just to get it looking reasonable.
This is applied to all your shots from that camera.
Think of it as putting on your socks every morning.... just looks presentable; that's all.
When finalizing your processing in the Editor, you can apply the final touches of DFS if needed.
Each image is different. Contrast, lighting, content, and inherent noise, all different from shot to shot.

2) Camera noise. Usually worsened when too many pixels are packed on to a too small sensor.
We have Granular noise and Chroma noise.
The adaptive Noise reducer in the qsn file is one of Mike's wonderful applications that goes unheralded.

The video hopefully will explain it all. So I wont go into detail here.
My Canon 20D and my 50D are excellent examples of more pixels, more noise with it.

Remember to make full screen for HD, and enjoy

https://youtu.be/2yEWBG3lHmM

Thanks
Fred
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Jeff
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« Reply #1 on: July 01, 2017, 03:42:07 AM »

I think that is your best video yet.

Explains a whole lot in such a short time.

Thanks.

Jeff
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Fred A
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« Reply #2 on: July 01, 2017, 04:42:35 AM »

Quote
Explains a whole lot in such a short time.

Thanks Jeff,
It is really funny and loaded with "Aw Sh** as I do "Take 5".
I usually forget to turn off the email program, so I get, "You have Mail" right in the middle.
.... or Malware Bytes popping a warning flag.
.... and then, there's no script. I do have talking points jotted on a page, but that's a mess. Arrows curving from three to one, back to 4.
A sneeze doesn't help much either.
This time it was small. Auto Hide task bar..... was popping the task bar up when I got too close to the edge of it with the mouse.
I need, composer, John Williams to create some background music for the videos.
Note, I used your image (which I adore) in the demo. (Blonde lady on boat).
Thanks,
Fred
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Jeff
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« Reply #3 on: July 02, 2017, 03:32:27 AM »

Quote
Explains a whole lot in such a short time.


Note, I used your image (which I adore) in the demo. (Blonde lady on boat).


Noted.

Taken in the Med, east of Marseille, land side all limestone cliffs in Mid day sun.  Hopeless.  Turned to look out to sea and got two reasonable shots. 

Heavy cropping improved the two shots.

Jeff   
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Fred A
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« Reply #4 on: July 02, 2017, 05:30:46 AM »


Quote
I shutter to think what would happen should the QSN fall into the wrong hands.
Jeff,
You usually are pretty sharp, but am I to believe you missed the wrong "shutter" in the above?
Maybe it was just too much of a pun.
Fred
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Jeff
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« Reply #5 on: July 03, 2017, 02:44:08 AM »


Quote
I shutter to think what would happen should the QSN fall into the wrong hands.
Jeff,
You usually are pretty sharp, but am I to believe you missed the wrong "shutter" in the above?
Maybe it was just too much of a pun.
Fred

I am getting old, you have got me there.

In the words of your president what the hell are you on about?

Jeff
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Grumpy
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