100% zoom is actually 200%

New Here ,
Jan 29, 2021 Jan 29, 2021

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Hello, I noticed something strange recently: for some time (I can't say exactly how long, because I haven't been using Lightroom much recently, but it may well be since the update to 4.1), 100% zoom in Lightroom is actually more like 200% on my Macbook Pro 15". In Lightroom Classic 10.1, it's fine.

 

I'm adding 2 Screenshots from the same Photo zoomed in to "100%" in both applications.Screenshot 2021-01-29 at 19.39.38.pngScreenshot 2021-01-29 at 19.40.14.png

 

The file is a Fuji RAF, but the result is the same with JPG, as well as with other cameras.

 

I'm wondering if anybody has the same issue and if there is a solution to the problem.

 

Thank you !

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Bug, Problem or error

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Adobe Community Professional ,
Jan 30, 2021 Jan 30, 2021

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This is a known issue on high res screens. I'm sure it will be fixed in an update.

-- Johan W. Elzenga

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New Here ,
Mar 13, 2021 Mar 13, 2021

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Thank you !

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Adobe Community Professional ,
Jan 31, 2021 Jan 31, 2021

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It's because consumer-oriented viewers scale up to 200% when they detect a high density screen. Lightroom displays correctly.

It's not a "bug" in Lightroom, it behaves as it should.

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Adobe Community Professional ,
Jan 31, 2021 Jan 31, 2021

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That's not always the case. This  issue is a definite bug that has been identified by Adobe engineering, but which only affects retina screens on Big Sur.

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Adobe Community Professional ,
Jan 31, 2021 Jan 31, 2021

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Agreed, and aknowledged as by Adobe QE.

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Adobe Community Professional ,
Jan 31, 2021 Jan 31, 2021

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Does that mean Lightroom is not displaying at 100%, one screen pixel to one image pixel, on Big Sur? Just trying to understand this correctly.

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Adobe Community Professional ,
Jan 31, 2021 Jan 31, 2021

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Yes that is correct. Lightroom Desktop basically displays one image pixel in 4 screen pixels. It basically ignores the display scaling factor on retina/HiDPI screens but only on BigSur. Classic works correct.

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Adobe Community Professional ,
Jan 31, 2021 Jan 31, 2021

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OK, thanks.

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