6 Messages
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130 Points
Mon, Apr 1, 2019 3:05 AM
Develop module preview differs from Library + Exported JPGs
There is a rendering issue within the latest version of Lightroom Classic CC (8.2).
When making adjustments to highlights, whites, shadows, blacks and exposure, the image shown in the Develop module at the 'fit' zoom level is different to what is shown at a 1:1 zoom, the Library module and in exported JPG's.
Here is a screenshot as seen in the Develop module - https://i.imgur.com/ggvvc2X.jpg
Here is a screenshot of this exact image with no further adjustments, as an exported JPG - https://i.imgur.com/mXJ5XCr.jpg
In this example I have placed a radial adjustment on the couple, +17 Shadows and -90 Whites.
I had been using GPU acceleration but I have turned it off and this does not solve the problem. These are Sony A9 RAW files (.arw), Windows 10.
When making adjustments to highlights, whites, shadows, blacks and exposure, the image shown in the Develop module at the 'fit' zoom level is different to what is shown at a 1:1 zoom, the Library module and in exported JPG's.
Here is a screenshot as seen in the Develop module - https://i.imgur.com/ggvvc2X.jpg
Here is a screenshot of this exact image with no further adjustments, as an exported JPG - https://i.imgur.com/mXJ5XCr.jpg
In this example I have placed a radial adjustment on the couple, +17 Shadows and -90 Whites.
I had been using GPU acceleration but I have turned it off and this does not solve the problem. These are Sony A9 RAW files (.arw), Windows 10.
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carlos_cardona_4982447
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2 years ago
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ben_howland_addosq5qi3xk5
6 Messages
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2 years ago
The image preview within LR should be consistent between varying Develop zoom levels, and also the Library module.
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carlos_cardona_4982447
799 Messages
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2 years ago
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ben_howland_addosq5qi3xk5
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2 years ago
In the meantime I'm watching some Capture One tutorials haha
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JohanElzenga
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Johan W. Elzenga,
http://www.johanfoto.com
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ben_howland_addosq5qi3xk5
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130 Points
2 years ago
It's not a colour management issue.
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John_R_Ellis
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John_R_Ellis
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SimonChen
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Principal Scientist, Adobe Lightroom
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todd_shaner_6660895
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2 years ago
It would be helpful for Ben Howland to upload a DNG Export file with his settings applied.
https://forums.adobe.com/message/11000266#11000266
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ben_howland_addosq5qi3xk5
6 Messages
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130 Points
2 years ago
'Fit' zoom level within Develop - https://i.imgur.com/7SmFQQc.jpg
1:1 zoom level within Develop - https://i.imgur.com/PGUDRW3.jpg
DNG - https://www.dropbox.com/s/tpsozt8c6b1jx2y/T_001.dng?dl=0
System Info - https://www.dropbox.com/s/cnckl6enre4kvgm/About%20LR.txt?dl=0
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SimonChen
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2 years ago
What happens is that when this preference is checked (for speed up image walking and editing in develop), Lightroom would try to only load and edit a Smart Preview quality (even when SP is not present) negative when possible. It would only load the full resolution original when one zoom into 1:1 or greater.
Obviously editing this Smart Preview quality negative isn't the same thing as editing the full resolution original. It is just an approximation. For most times, it would be a close replacement. But on this photo, there is visible difference. This is because since Process Version 3, the range of some basic adjustment controls (highlight/shadows/whites/blacks etc) are adaptive to the image content. Such image statistics differs between full resolution and Smart Preview quality negatives. In your case you have applied global and local gradient with such type of adjustments.
If you toggle the Process Version to version 2, then you would not see such differences.
If your priority is the visual fidelity, check off the "Use Smart Previews instead of Originals for image editing" preference.
Principal Scientist, Adobe Lightroom
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ben_howland_addosq5qi3xk5
6 Messages
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130 Points
2 years ago
Unchecking the 'Use Smart Previews' checkbox has resolved the issue for me, extra thanks to Simon! It's disappointing that I can't enjoy the increased performance of using Smart Previews but I'll gladly take that compromise if it means knowing my edits are accurate.
This is clearly still a bug to some degree, from what I could find this community forum was the most legitimate place to report it?
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