Photoshop Camera Raw Issue( CC2014) with Fuji RAF raw files producing a light outline at high contrast adjacencies.

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Camera Raw issue using CC2014: With RAF raw files from my Fuji XE2, I am finding light outlines between areas of higher contrast--like sky and dark earth. This looks a lot like what one gets from over sharpening, however, this appears on a clean (no presets) loading into ACR and does not disappear when I turn off the default sharpening or color noise settings that appear with these files. To determine if the issue was with the files or camera, I opened the same files in both SilkyPix and Iridient and the issue does not exist in either of those programs, only in ACR. I prefer using ACR over any other software and hope this can be addressed.

Note: This does not happen with my Canon raw files from my 1dsmkIII, however, it is with the Fuji files that ACR indicates that several corrections are being made by applying data captured in the files (same as with SilkyPix and Iridient Developer) and I wonder if there is something in those algorithms that is off?? There doesn't seem to be a way to override those adjustments.
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John Acurso

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Posted 4 years ago

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Steve Sprengel, Champion

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Check to see if you have default Lens Corrections / Color / Defringing settings enabled.

If you want someone else to try and replicate it then upload your raw file to www.dropbox.com and post a public download/share link, here.

In general Adobe's Fuji X-Trans processing is still inferior to other raw converters despite improvements back in ACR 7.4 and LR 4.4.
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John Acurso

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It doesn't matter if those things are checked or not--the file doesn't make any changes either way, so it would appear the issue is in the algorithms that Adobe sets using the info from the raw file (which it explicitly states as being used in a dialogue box in ACR). There is no way to modify those settings.
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Steve Sprengel, Champion

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In your initial statement you said that presets and sharpening were not the cause of the issue and I wanted to bring Defringing into the mix because that is something else that causes haloing, as well as the possibility that you've accidentally/unknowingly set non-standard camera-raw defaults. I asked for a raw file to confirm for myself that there wasn't anything non-standard going on in my opinion as well.

Defringing is a set of sliders, not checkboxes, but if your two Defringing Amount sliders are set to 0 then no defringing is applied and that can't be the source of the halo.

What do you mean by the latter part of this statement?

"The issue is in the algorithms that Adobe sets using the info from the raw file (which it explicitly states as being used in a dialogue box in ACR). There is no way to modify those settings."
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John Acurso

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Thanks Steve,

I think I stated that everything in my power was neutralized--I have extensive experience with these sorts of programs and digital in general (over 20 years professionally). I purposely went through and deactivated and activated just about everything that might affect this issue, there are no defringe settings on, no noise corrections, both on and off with the default sharpening, on and off with the profile and chromatic aberration (latest update of CC2014 seems to have modified the performance in this area--see next paragraph) etc. None of these things has had an effect on this issue.

That last statement has to do with the fact that Adobe automatically--checked or not--applies correction to the image for lens distortion, chromatic aberration and vignetting based on information the raw file contains within it. In other words, you don't have to check those boxes and several corrections (algorithms) are being applied without any intervention by the user. At the same time, there seems to be no way to override these corrections by the user to diagnose whether these algorithms are what is affecting this issue. An alert, to the fact that these corrections have been made, shows itself under the lens correction tab--see below.

I do not share my raw files, it is not good practice, especially in a public way.

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Steve Sprengel, Champion

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Ok, I see what you're referring to.

However, the defringing controls allow selected correction of a different kind of chromatic aberration (axial) than what is handled by the lens profile (lateral) because it varies with the distance in front or behind the focus plane as well as the distance from the center so cannot automatically be corrected.

I'm pretty sure we're seeing a non-optimal X-Trans conversion that Adobe does, but without a raw file we'll have to take your word for it. There are numerous other examples of Adobe X-Trans being inferior in all sorts of ways with lack of resolution/detail in both luminance and colors the main thing. You're seeing a lack of color resolution where Adobe's algorithm assumes gray and other algorithms pick one of the adjacent colors more often.

A traditional Bayer array has a repeating pattern of 2x2 RGBG photosites. An X-Trans photosite array is 6x6 and an uneven distribution of colors within that 6x6 array:
http://en.wikipedia.org/wiki/Bayer_fi...

I expect Adobe's processing is optimized for the 2x2 RGBG pattern and falls down on for the much larger and more clumpy X-Trans photosite pattern, and also hampered by the fact they can't use any open-source algorithms that might be superior because then someone might sue them for compensation or require their software to be distributed free, so whatever they come up with has to be derived inhouse or be unencumbered by licensing fees or lack thereof.

I hope Adobe can improve on things in house at least one more time with X-Trans so it's up to par with others and with their 2x2 RGGB processing detail.
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John Acurso

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That's my hope as well....and why I brought this up.