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Inge225195940869
Participant
January 5, 2022
Question

Pixalated png after import

  • January 5, 2022
  • 2 replies
  • 704 views

Hi all, 

 

Whenever I try to import a png, the image becomes pixelated in Illustrator. When you in check a photo viewer app these pixels are not visible yet. It's unfortunate that a 'good' picture is no longer usable after placing it in Illustrator. What can be the problem here? I use the latest version of Adobe. The raw data is opened and processed in ImageJ, next exported as png.

I already did the following things: 

- Tried it on (different) Windows desktops and MacBook 

- Uninstalled the latest version and tried an older version

- Reset preferences

- Imported the png via 'place' via 'open' via dragging

- Exported the image as tif or jpeg

 

Ofcourse, I can be due to the quality of the png image or the raw data, but when checking a photo viewer or using it for a presentation in powerpoint, the image is not pixelated and perfectly usable. 

 

I found this question online a couple of times but nobody was able to come up with a solution then, so fingers crossed.

 

Thanks! 

 

 

This topic has been closed for replies.

2 replies

Ton Frederiks
Community Expert
Ton FrederiksCommunity Expert
Community Expert
January 6, 2022

I would not expect much better from a 72 ppi 167 X 170 px image zoomed in at 400%.

    I
    Inge225195940869Author
    Participant
    January 6, 2022

    Yes, indeed. However, the zoom seemed okay when the image was not imported into Illustrator. Therefore I was hoping I just missed something while importing for example. I am aware the picture is not ideal at all, but retaking it at 2048x2048 is unfortunately not an option anymore, so I was trying to make it work!

    Monika Gause
    Community Expert
    Monika GauseCommunity Expert
    Community Expert
    January 5, 2022

    Please show a screneshot

    And please tell us the effective resolution of the image.

    I
    Inge225195940869Author
    Participant
    January 6, 2022

    According to photoshop, the resolution of the resolution is 72 ppi, image size is 167 px x 170 px.

    I included a screenshot where I didn't change the size of the image. I placed it in Illustrator and zoomed in. The photo is more pixelated than in the photo viewer app. I want to make a scientific figure with several panels of confocal images, so it is important that readers/reviewer can zoom in on certain images. 

     

    In the meantime, I tried changing the resolution to 300 ppi in Photoshop and this seems to do the trick? However, I was wondering if there is anything else I can do, except going via Photoshop or maybe starting taking the raw data at a higher resolution to begin with (this is not an option anymore, because we have to redo experiments then). It's just weird to me that a photo that is perfectly fine changes that much in Illustrator. I am aware of the raster to vector change but still!  

     

    I
    Inge225195940869Author
    Participant
    January 6, 2022

    Sorry, the screenshot is not showing my point at all. Hopefully this one is better!

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