DFS question

DavidC

Newbie

Posts: 22

DFS question

« on: August 31, 2014, 02:19:58 PM »

I'm a bit confused about when DFS is applied. I shoot RAW and the default DFS is 2 @ 150% on import (as set in the RAW format options in preferences). If I then go to the image editor the DFS boxes are both set to zero. Has the image in the image editor already been sharpened and setting sharpening there is in addition?

I'm obviously missing something I would would appreciate it if someone could enlighten me.

Thanks!

David


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Fred A

Forum Superhero

Posts: 5644

Re: DFS question

« Reply #1 on: August 31, 2014, 02:37:41 PM »

Quote

Hi David,
You have it right!
Raw images are inherently soft. They need a little "preset" sharpening to make them look normal.
Then you can add in the Editor if you think additional sharpening is needed.

That having been said, Qimage recognizes that different camera - lens combinations produce images with various degrees of sharpness. Therefore, for example, you can customize your settings differently for each camera.
I have a Canon 20D, and my wife has a D 60. I can set the amount of preset sharpening and Noise reduction differently for each of those two,,, and SAVE.
When Qimage sees the 20D image, it automatically applies the defailts SAVED in the 20D file, and same for the D 60.

Fred


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DavidC

Newbie

Posts: 22

Re: DFS question

« Reply #2 on: August 31, 2014, 02:41:46 PM »

Thanks Fred. So why doesn't the default raw sharpening applied (2 @ 150%) get carried over to the image editor?


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Terry-M

The Honourable Metric Mann
Forum Superhero

Posts: 3251

Re: DFS question

« Reply #3 on: August 31, 2014, 02:48:09 PM »

Hi David

Quote

Has the image in the image editor already been sharpened and setting sharpening there is in addition?

,
The short answer is yes.
The raw sharpening is to get a basic overall sharpness in the image, without it, a raw images would look soft. Note too that the the sharpening applies to the raw image also uses the DFS algorithms.
The Image Editor DFS is there to improve the image if it requires it.. With a good lens and shooting conditions, many images may not require additional sharpening.
DFS combined with TTS in the editor can be used to sharpen only certain parts of the image and possibly soften other areas, thus helping you to add emphasis where it is required.
Have a look at Challenge 32A to 32E http://ddisoftware.com/tech/qimage-ultimate-challenges/challenge-32-tips-on-dfs/
You should find this helpful.
Terry


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Fred A

Forum Superhero

Posts: 5644

Re: DFS question

« Reply #4 on: August 31, 2014, 02:51:54 PM »

Quote

Thanks Fred. So why doesn't the default raw sharpening applied (2 @ 150%) get carried over to the image editor?

Because that is a PRESET, and becomes part of the raw image development.
Just like setting White Balance or Fill or contrast in REFINE, that is in the raw file, and when you open the editor, those are at zero also.
You are looking at your image as it was developed by Qimage. Now add salt and pepper to taste.

Think of it this way, perhaps. If you shoot Raw + JPGs, or if you shoot JPGs alone, there are presets in the camera that are applied to those too.
It applies contrast Color Space, Sharpening and Noise reduction and more.
Shooting in Raw mode, gives you the flexibility to make your own Presets.

I hope that clears it up a bit.
Fred


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DavidC

Newbie

Posts: 22

Re: DFS question

« Reply #5 on: August 31, 2014, 02:53:36 PM »

Thanks all - that clarifies things!

David


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