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Drag/dropping images into PS (Resolution question)

New Here ,
Feb 20, 2020

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Here is what I know: 

 

When drag/dropping an image between PS files where the image file is opened in a separate PS tab/window: 

  • The to-be-placed image will be auto-resized to match the PPI settings of the PS file it’s being dropped into

 

When drag/dropping an image from desktop directly into an open PS file: 

  • If the to-be-placed image has smaller dimensions than the canvas size of the Open PS file, the to-be-placed image will retain its dimension size when dropped into the file. 
  • Question: What is the resolution of the placed image once it’s dropped into the PS file? Does PS auto fill/subtract pixels in the image to match the PPI settings of the Open PS file it’s being dropped into? Or does the image retain it’s original resolution (PPI) along with its size? 

 

  • If to-be-placed image is larger than the canvas size of the Open PS file, the to-be-placed image will be auto-scaled to fit within the Open PS file canvas dimensions. 
  • Question: What is the resolution of the placed image once it’s dropped into the PS file? Does PS auto fill/subtract pixels in the image to match the PPI settings of the Open PS file it’s being dropped into? Or does the image now have the resolution it would originally have if resized to match the dimensions auto-applied by PS? 

 

Additional Question: 

Is there a panel/window/tool within PS 2020 that shows the resolution of “placed” images within a PS file? The image size panel shows me the info for my working PS file, but not the individually placed images within that file (even when the individual image layer is selected). 

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Drag/dropping images into PS (Resolution question)

New Here ,
Feb 20, 2020

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Here is what I know: 

 

When drag/dropping an image between PS files where the image file is opened in a separate PS tab/window: 

  • The to-be-placed image will be auto-resized to match the PPI settings of the PS file it’s being dropped into

 

When drag/dropping an image from desktop directly into an open PS file: 

  • If the to-be-placed image has smaller dimensions than the canvas size of the Open PS file, the to-be-placed image will retain its dimension size when dropped into the file. 
  • Question: What is the resolution of the placed image once it’s dropped into the PS file? Does PS auto fill/subtract pixels in the image to match the PPI settings of the Open PS file it’s being dropped into? Or does the image retain it’s original resolution (PPI) along with its size? 

 

  • If to-be-placed image is larger than the canvas size of the Open PS file, the to-be-placed image will be auto-scaled to fit within the Open PS file canvas dimensions. 
  • Question: What is the resolution of the placed image once it’s dropped into the PS file? Does PS auto fill/subtract pixels in the image to match the PPI settings of the Open PS file it’s being dropped into? Or does the image now have the resolution it would originally have if resized to match the dimensions auto-applied by PS? 

 

Additional Question: 

Is there a panel/window/tool within PS 2020 that shows the resolution of “placed” images within a PS file? The image size panel shows me the info for my working PS file, but not the individually placed images within that file (even when the individual image layer is selected). 

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Feb 20, 2020 0
Adobe Community Professional ,
Feb 20, 2020

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Natively in Photoshop, there is no ppi. There is only pixels, so many wide by so many high. A Photoshop file has no size, pixels are just data points without a size.

 

To print a file, you need to define a size on paper. The way to do this is to define a pixel density. How many pixels per inch of paper. That's ppi - pixels per inch. The ppi figure is added to the file as metadata.

 

When you copy/paste, one pixel grid aligns over the other, one to one. There is still no ppi, just pixels.

 

Then someone came up with the bright idea of Smart Objects. That's what you get when you Place. But to make a Photoshop smart object compatible with vector apps like Illustrator, you had to define them by physical print size, because that's what vector apps do. Luckily that is possible, by using the assigned ppi value and resulting print size.

 

So that's what placed smart objects do. They honor relative print sizes, not pixels. That's not native or natural behavior, and a smart object is a derivative function. Lots of things are possible with smart objects, but you need to be careful to avoid unnecessary resampling which is always harmful to the image.

 

The smart object doesn't resample right away because the original is embedded the whole time, unchanged - but sooner or later the smart object will be rasterized, and then you risk harmful resampling unless you know all this and can take precautions to avoid it.

 

So in short: Copy/paste aligns to pixels. Placed smart objects align to physical print size.

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Feb 20, 2020 1
Explorer ,
Nov 18, 2020

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Am I able to get your help on my question here by any chance? https://community.adobe.com/t5/photoshop/drag-and-drop-vs-import-layer-image-size/m-p/11605680#M4858...

 

I've just happened across this thread and it's on a very similar topic but doesn't quite answer my question. Thank you! 

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Nov 18, 2020 0
lubalbs LATEST
Explorer ,
Nov 18, 2020

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Actually ignore my question - I think I've finally figured it out! (Sorry - I can't delete it.)

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Nov 18, 2020 0
Most Valuable Participant ,
Feb 20, 2020

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Resizing to match PPI is a bug it degrades images.  An Image's quality should be maintained.  If the user need to scale the image for the scale of other images content they will. Changing the number of pixels an image has just degrades the imags's content quality. Place should not do it.  Place should work like Copy Paste, Duplicate Layer.  Draging Layer between document etc.

 

Places resizing for a File Print Resolution is a blunder Adobe made.  

JJMack

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Feb 20, 2020 0
Adobe Community Professional ,
Feb 21, 2020

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You can call it a blunder or bug if you will, but it's how smart objects are intended to work. It's by necessity in order to make them compatible with Illustrator and other vector-based applications. Like it or not...

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Feb 21, 2020 0
Most Valuable Participant ,
Feb 21, 2020

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Then it should be an option for user that do not use AI and other vector editors. Photoshop is not a vector editor, Place if you not careful will degrade your placeds images.   Perhaps the why Adobe  made Placed AI files like .svg and .ai file Vector Smart objects. Where there are no vector in Photoshop for the object.  Photoshop just re-imports the placed vector file when you scale vector smart object.   For myself I wrote script that use Place in a way Image will not be degraded.  However new tools like Photoshop Frame tool uses Place. So I had to removet that tool from my tool bar and disable its shortcut. 

 

 

Place does not vectorize raster image to make photoshop pixel image compatable with vector applications.

JJMack

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Feb 21, 2020 0
Adobe Community Professional ,
Feb 21, 2020

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People are overcomplicating it in my humble opinion.   If your primary image is (as a for instance) 4000 pixels wide, and you need to introduce an element that will occupy one quarter the width of the primary image, then the introduced element should be at least 1000 pixels wide.  That's all there is to it.  As Dag says, ppi is not relevant.  It's OK for the introduced element to be more than 1000 pixels wide, and it is true that it is an excellent idea to make the layer a Smart Object before Free Transforming it.   

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Feb 21, 2020 0
Most Valuable Participant ,
Feb 21, 2020

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Yes converting layer to a smart object does not degrade the layers in fact it  hardens the layer quality. Place is not involved in the conversion and the layer is in the document there is only one print ppi.  Its when Placed is used where there are external image files that may have a different print resolution then the current document current print resolution which can be changed.   Print resolution it for the print pixel size not the number of Pixels in an image.  However, Place will change the number of pixels if you are not diligent.  The Scripts I wrote do that before and after using place.  I match the current document resolution to the external file print resolution place in the image then restore the current document to the resolution it had before place was used. I do not use Linked Smart object only use embedded smart object and shared embedded smart objects.

JJMack

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Feb 21, 2020 0