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Why does ppi matter for web images?

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Hello

 

 

When placing an image in my (web/pixel) project the resolution is dependent from the set ppi.

When I create a new document for web, then logically only the pixels matter. Nonetheless there's a ppi field, why? And depending what value it has, placed pictures (file > place or drag&drop from Windows' explorer) get resized instead of the wanted 1:1 resolution.

1 pixel should remain 1 pixel when working with in pixels.

 

Try it out:

Create a new document with Full HD resolution (1920x1080 pixels), set ppi to 10.

Import a Full HD picture (Blu-Ray screenshot whatever) and it's mini-sized.

 

My screen resolution is 59 ppi (I use my 39" TV as monitor) and this is set in the Photoshop preferences (in case I do some print stuff that I get a 1:1 view if wanted). If there was any logic behind the pixel-ppi-placing thing, then this set standard monitor ppi should bring me a 100% sized picture... but it doesn't. Only when the ppi is set to the fantasy value of 72 I get a 100% sized placing.

 

This can be disturbing and is very annoying when starting a new project by opening an image that does not come with 72 ppi by default (my Canon camera makes 180 ppi JPEG photos)  and placing new pictures in this project. They get opened in wrong sizes, in my case largely upscaled, with no way to correct it but guess-scaling it down.

 

Bug?

Pls pls fix it.

Ppi has nothing lost in pixels-only projects.

 

The only way that works is to open all single images in Photoshop as tabs, and then drag&drop from within Ps. -.-

 

 

Regards

Mopsi

 

 

Example screenshot: http://www.m-i-u.de/images-i83580bxvogj.jpg

The yellow framed layer is a image from my camera, opened in Photoshop CS6 extended. 3264x2448 pixels (180 ppi).

The green framed layer is a screenshot from a movie, drag&drop from the explorer. 1920x1080 (normally) unwanted upscaled here.

The red framed layer is a screensot as well, but drag&dropped from a tab within Photoshop. It remains in its original resolution of 1920x1080.


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