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Photoshop doesn't open the actual size of my files

New Here ,
Oct 05, 2021 Oct 05, 2021

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Hi, I just installed photoshop 2021 on my Mac Pro M1, and when I open the files, they look half the original size.
For example, I open a 1000px x 500px image at 100% zoom, but the image it shows is 500px x 250px. Only if I change the zoom to 200% is the original size displayed, but the image looks pixelated.
Does anyone know why this happens?


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correct answers 1 Correct answer

Community Expert , Oct 29, 2021 Oct 29, 2021

Photoshop displays correctly, one image pixel represented by one screen pixel.

 

Other consumer-oriented apps (web browsers, image viewers) scale the image up to 200% when they detect a high-resolution/retina screen. They do this so that images will display at roughly the size people are used to from traditional displays.

 

This is the industry standard workaround to ensure the same material can be used regardless of screen technology.

 

View > 200% in Photoshop does exactly the same thing.

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Adobe Employee ,
Oct 29, 2021 Oct 29, 2021

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Is this M1 computer your first computer with a retina resolution screen?

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LEGEND ,
Oct 29, 2021 Oct 29, 2021

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Do you mean a MacBook Pro M1? And as Jeff is asking, a Retina screen is scaled so you have to view at 200% typically to see actual pixels. I have an Intel MacBook Pro 15" and iMac 21", both with Retina screens, and this is true for both.

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Community Expert ,
Oct 29, 2021 Oct 29, 2021

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Photoshop displays correctly, one image pixel represented by one screen pixel.

 

Other consumer-oriented apps (web browsers, image viewers) scale the image up to 200% when they detect a high-resolution/retina screen. They do this so that images will display at roughly the size people are used to from traditional displays.

 

This is the industry standard workaround to ensure the same material can be used regardless of screen technology.

 

View > 200% in Photoshop does exactly the same thing.

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LEGEND ,
Oct 29, 2021 Oct 29, 2021

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On a Retina display, one display pixel is composed of multiple actual screen pixels. A file at 100% does NOT show full sized at scaled resolutions.

 

My 15" MacBook Pro has a 2880 x 1800 display that by default scales to appear as 1440 x 900. However, a 1440 x 900 file is shown in PS only filling half the screen because of the 100% scaling.

 

So to see it correctly filling the screen, I have to scale the image to 200% in Photoshop.

 

Screen-Shot-2021-10-29-at-6.59.09-PM.png

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Community Expert ,
Oct 29, 2021 Oct 29, 2021

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Yes, that's what I'm saying. 1440 x 900 will fill half the screen when it's displayed accurately, as Photoshop does.

 

Photoshop doesn't care about all these scaling workarounds that other applications do, including the native Mac apps. It just displays one image pixel to one physical screen pixel.

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LEGEND ,
Oct 30, 2021 Oct 30, 2021

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Yes and to circle back to the OP, it's why she is see8n* things half sized. It got me too when I first bought the Retina machines

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