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stephanie28346195yge9
Participating Frequently
January 31, 2024
Question

Pixel dimension for same physical size is wildly different in Photohop and Illustrator

  • January 31, 2024
  • 1 reply
  • 2328 views

I have Photoshop CS5 and Ilustrator CS6.

I wanted to make a template in Illustrator of a specific size, 210mm x 100mm.

When I made a new file with an artboard of 210mm x 100mm, the pixel dimension was 595.28px * 283.46px which is way off the expected 2480 x 1181 pixels. The expected dimensions comes from this calculation:

Converting mm to inches then multiplying the inches by 300 which is the DPI (resolution).

 

So then I made a template in Photoshop with the same physical size, and the pixel dimensions (after mm to inch and inch to pixel conversion) was indeed 2480 x 1181 pixels.

 

What is happening and how can I output a file of an accurate dimensions in Illustrator?

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    1 reply

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    stephanie28346195yge9Author
    Participating Frequently
    January 31, 2024

    Question Poster here.

    I did some more tests and discovered that the file I created in Illustrator with pixel dimensions of 2480 x 1181, when exported from Illustrator as a jpg and opened in Photoshop, has a massive dimensions of 874 x 416mm instead of the intended 210mm x 100.

     

    When I made a rectangle in Photoshop with physical dimensions of 210mm x 100mm and exported it as a jpg, then opened it in Ilustrator, the physical dimensions remained the same, but the pixel size (you can check the artboard size in other units such as pixels by going to File -> Document set up -> click on "Units" in top left corner and select a new unit -> click "Edit artboard".) was 595 x 283px so there is something going on with the pixel size in Illustrator.

    c.pfaffenbichler
    Community Expert
    c.pfaffenbichlerCommunity Expert
    Community Expert
    January 31, 2024

    Image Resoltion is given in ppi, not dpi!

     

    Illustrator is a vector oriented application. 

    It probably just assumes 72ppi (what with tradition). 

    But your description seems a bit unclear to me, please post screenshots with all pertinent Panels visible. 

      S
      stephanie28346195yge9Author
      Participating Frequently
      February 1, 2024

      Yes I know digital resolution is in PPI and not DPI, but since I am using Photoshop for ultimately a printed product (to a required 300 DPI), I chose to use DPI fo convenience in my mind, apparently to your displeasure. We can quibble over D or P but the issue remains, the conversion size is different between Photoshop and Illustrator.

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