Demosaicing Issue in Raw Files from Sony A7R III

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I recently upgraded from an A7R II to a RIII. Made the change right around the time that the new Texture feature was updated and the enhance details changes went live: https://theblog.adobe.com/enhance-details/

After a trip to Scotland to test the Camera I immediately noticed that in photos of bluebells the seams were jagged and color bleed was messy. Later when photographing a local Carnival parade, I again encountered issues where on zoom image quality felt like an over-compressed JPG. When asking initially in various Sony groups (concerned it was a defective camera), most wrongly assumed it was tied to issues with the lens or general diffraction. Further experimentation confirmed it was present across focal lengths, and all three of my lenses: 70-300MM, 50mm F1.8, and 24-70 F4 as well as at high and low F stops.

It was then that one user pointed out that it was a demosaicing issue, noting it was one of the worst cases he'd seen of it/explanation here: https://rawpedia.rawtherapee.com/Demosaicing?fbclid=IwAR3K9iMVH01YkJvn-e1uKXEo39bpymtfKKLu0RNb7svKyN6sVPKUwKteGJM#Introduction and the full thread with early examples here: https://www.facebook.com/groups/sonyalphacamera/permalink/912291675797921/

I just returned from photographing another trip in Colorado and am seeing similar challenges on dune shots - example here:
adobe.ly/2YkEOe8 particularly in this area:
 https://ton.twitter.com/1.1/ton/data/dm/1152913098963083273/1152913093552484352/wjbW59Gm.jpg:large

It's worst when it comes to colors, but also seems to destroy finer details that should otherwise be crisp. 

I'd love any ideas on fixes, suggestions, ideas on what to do about it, or alternative solutions. 

Would also be very curious if any other A7R III users are finding and flagging the same issue on detailed inspection of their RAWs or not.

The Camera has the latest firmware, is less than 4 months old, and all gear is in great shape / don't recall having any such similar issues on the A7R II.


 
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Alex

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Posted 4 weeks ago

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Johan Elzenga, Champion

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What profile do you use? I have seen discussions about poor quality with the Camera Matching profiles. I have a Sony A7R III myself and I always use Adobe Landscape. Results are great.
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Alex

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Interesting. The issue im focused on is less camera matching on color side by side, and more the actual handling of it.  I did run through and switched a few of the unedited shots of the dunes from Adobe Color to Adobe Landscape and the color depth/shadow/ etc. do look much better. It might help with the zippering issue etc. slightly? Hard to say.

The different profiles are more color profiles right? Not actually the demosaicing / related core data interpretation? Or are they?
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Alex

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@Johan - Spot check the additional examples below.
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Johan Elzenga, Champion

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The profiles that Lightroom/ACR uses are not just color profiles. There are not icc-profiles, but profiles that do indeed get used in the demosaicing.
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Alex

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Great to know. Suppose would help explain why Landscape does indeed seem to reduce it partially. 
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Alex

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Adding additional examples:
RAW 2: https://adobe.ly/2YpEE5D
RAW 3: https://adobe.ly/2K7rOQj

Screenshot examples from the above:



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Todd Shaner, Champion

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I'm not seeing any issues in the above two ARW files at 1:1 Zoom view using the Adobe camera profiles. The Camera matching profiles look quite different, which leads me to believe they may have an issue. Can you post 1:1 screenshots with a description of what we should look for.

Sorry, I see you've already done that in your last post. All I see is some out of focus areas due to depth of field. with no demosaicing issues or artifacts.

Here's Adobe Landscape (L) and Camera Landscape (R) with 'Auto' Tone applied. All other settings are at their defaults.

1:1 Zoom View

(Edited)
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Alex

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Yikes. So - much to my chagrin - that's probably it. The enhance details does in fact make a difference. But, as per your request - I spot checked the Details panel. Sure enough, I'm all the way up at 40 - seems like might be a default? But just as likely it was me. And given I've been actively avoiding any over-sharping tweaks on the new files after spotting the issue, I haven't gone back and checked it to see if it carried forward from a previous catalog edit. Does still seem like there's some sort of third element inbetween the two (enhanced details / decreasing sharpening)  but at least that does help some.


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Todd Shaner, Champion

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I can confirm what you're seeing when viewing the ARW file next to the Enhanced DNG file at 4:1 Zoom View. Try shooting RAW + Full-Size, High Quality JPEG and see if those jaggies are present in the JPEG. In real-world usage I doubt you'll ever see the difference using the Enhanced DNG because at 1:1 Zoom View it's really not visible on my monitor!


The Sharpening default settings have changed in LR 8.x to what you're seeing. You can change it. Hit the master Reset button, change to the Detail panel settings to what you want, ALT click on the Reset button, and select 'Update to current settings. You can Sync the new Sharpening settings to the other image files to update them.


4:1 Zoom View (Click on image to see full-size)


1:1 Zoom View
(Edited)
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Alex

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Gotcha, great to hear I'm not just going nuts =) interesting - if they changed and were increased by default then perhaps that's why it suddenly "appeared" for me. 

I do do a ton of landscapes so the stone, forest and grass details are where I really notice it. But, by that same token, I usually won't use the lens profiles either as I dislike how they stretch and distort on those lenses.

I normally shoot RAW+JPG for IG sync anyhow, but tend to delete them and only pull down the RAWs onto desktop. Will look at doing on the next batch.

Really appreciate the time and energy from you all. Will keep my fingers crossed as well that the next profile update somehow further improves things.
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Todd Shaner, Champion

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I think this is due to the Sony A7R III camera not having a low pass filter on the sensor.

https://www.dpreview.com/forums/thread/4265267#forum-post-60906604

Because of that less sharpening needs to applied so the LR Amount 40 is exacerbating the issue. Finding the right combination of Sharpening settings should help to hide the jaggies, such as the below settings. Also interesting to see how the JPEGs look with Sony's in-camera demosaic and sharping algorithms.

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Alex

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Great, will deploy those for my regular editing. 

Thank you all for the input and help throughout. Really appreciated.