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What does the number beside Pixel Dimensions in Resize panel referred to ???

Community Beginner ,
Oct 27, 2020

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Mystery Pixel Dimensions number

For years now I have wondered about this number (48.4 in the attached image). I have never been able to perform a calculation using any of the file parameters that would match this value for any image that I checked Resize panel for question.JPG  

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What does the number beside Pixel Dimensions in Resize panel referred to ???

Community Beginner ,
Oct 27, 2020

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Mystery Pixel Dimensions number

For years now I have wondered about this number (48.4 in the attached image). I have never been able to perform a calculation using any of the file parameters that would match this value for any image that I checked Resize panel for question.JPG  

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Feature request

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58

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Oct 27, 2020 0
Adobe Community Professional ,
Oct 27, 2020

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Actually i believe that's the estimated size of an uncompressed flattened Tiff and/or PSD (adobe isn't clear)

file in megabytes. It can also show in K(kilobytes) or G (gigabytes)

 

That is, if you were to save the file as a flattened Tiff and/or PSD with no compression, the file size shown in

Finder or Explorer would be about the same.

 

 

You can also see the same Document Sizes (Doc) in the left hand bottom corner of the document window and

here's what adobe says about that:

 

is2.png

 

 

 

is1.jpg

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Oct 27, 2020 0
Adobe Community Professional ,
Oct 28, 2020

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Calculation:

Knowing that one kilobyte is 1024 bytes

https://dictionary.cambridge.org/fr/dictionnaire/anglais/kilobyte

And you need 3 RGB components values (red, green, blue)

(4114/1024) x (4114/1024) x 3 = 48,4228019714

 

If you are in 16 bits instead of 8, it's twice the size, same if you have two normal layers (not adjustement layers).

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Oct 28, 2020 1