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Canvas size is not showing exact size as I put in my properties

New Here ,
Sep 13, 2021 Sep 13, 2021

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Hello Everyone,

 

Started by taking a new document of size w-20 Inches & h-30 inches

Then when I gone to the canvas size, its showing w-20.002 & h-29.998

also when I'm watchingat my properties pannel its showing 20*30

 

I'm not able to understand this problem.

I've attached the screenshot. please let me know if anyone can solve this.

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Bug, How to

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correct answers 1 Correct answer

Adobe Community Professional , Sep 14, 2021 Sep 14, 2021
An image is just a rectangular collection of pixels. These pixels don't actually have a physical size. An image only takes on a physical size when we assign a resolution to it and thus define how many pixels per inch (PPI) there should be. It looks like you are using 72 pixels per centimetre. Just wanted to confirm that you shouldn't be using pixels per inch. If you really want to nerd out... 1 inch = 2.54cm 20 inches = 20 x 2.54cm = 50.8cm 50.8cm x 72 pixels per cm = 3,657.6 pixels ...

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Adobe Community Professional ,
Sep 14, 2021 Sep 14, 2021

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I've created a 20 x 30 inch document and checked every setting as you have shown in your screen shots and can't make this happen. What are your system specs and have you completely restarted your computer and photoshop? Can you make a screen recording of your steps?

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Adobe Community Professional ,
Sep 14, 2021 Sep 14, 2021

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What are the document sizes in Pixels?

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Adobe Community Professional ,
Sep 14, 2021 Sep 14, 2021

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An image is just a rectangular collection of pixels. These pixels don't actually have a physical size. An image only takes on a physical size when we assign a resolution to it and thus define how many pixels per inch (PPI) there should be.

 

It looks like you are using 72 pixels per centimetre. Just wanted to confirm that you shouldn't be using pixels per inch.

 

If you really want to nerd out...

 

1 inch = 2.54cm

 

20 inches = 20 x 2.54cm = 50.8cm

 

50.8cm x 72 pixels per cm = 3,657.6 pixels

 

Can't have a fraction of a pixel so 3,657.6 becomes 3,658 pixels

 

3,658 pixels / 72 pixels per cm = 50.8055556cm

 

50.8055556cm / 2.54 = 20.0021872 inches = 20.002 inches (to 3 decimal places)

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Adobe Community Professional ,
Sep 14, 2021 Sep 14, 2021

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@Michael Bullo - right on! When I change to pixels per centimeter I can create the same canvas size.

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Adobe Community Professional ,
Sep 14, 2021 Sep 14, 2021

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Excellent @cmgap. Thank you.

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