Why does object appear larger when pasted onto another artboard

In Photoshop, the resolution is a undoubtedly a factor. In Illustrator, it is not.

If it is happening in both, I suspect it is a visual illusion. I set up both tests using the exact same specs, and took care to line up the floating windows to eliminate it. 

Let's say I have a canvas/artboard setup at 1000px tall by 500px wide, at 72ppi. I also have another canvas setup in the exact opposite dimensions, 1000px wide and 500px tall. 

In the original post, the resolution is specified for the first window, but not the the second. As stated in my posts, I made sure both windows in both applications had only one difference—the orientation. 

~Barb 

Copy-Paste function will copy pixels without any thought of resolution. Copied object must be exactly the same in pixel dimensions regardless of difference in resolution. This function was working this way for years. Same should be true when copy-paste layer from one document to another or when dragging it.

I am testing Ps 21.2.3 on Windows and everything works as described above.

Here is the same sequence in Illustrator...again, I don't see a difference.

~Barb

Maybe I'm missing something, but if the files are the same resolution and magnification, dragging from one window to another should maintain the same visual size. In the animation below, the magnification, pixel dimensions and resolution are visible on the status bar of both windows (bottom left). The cat looks the same size to me, and if I check the Info panel, they are the same size. What am I missing?

BTW, I tend to drag and drop to copy between windows, but got the same result with copy/paste.

~Barb 

I posted a script the can place a Logo/Watermark on any reasonable size  image. You will not be able to paste your logo into a icon or small thumbnails size image and be able to see your logo well.  You just need to change the Code to use your logo not mine.

The first few vars statements need to be changed for your preferences.  The script  resizes the logo to be some percentage  of your documents height. You use the var statements to set the height percentage, margin percentage, location and logo file.

 Here is Photoshop Script PlaceWatermark.jsx 

/* ==========================================================
// 2017  John J. McAssey (JJMack) 
// ======================================================= */
// This script is supplied as is. It is provided as freeware. 
// The author accepts no liability for any problems arising from its use.
/*
<javascriptresource>
<about>$$$/JavaScripts/PlaceWatermark/About=JJMack's PlaceWatermark ^r^rCopyright 2017 Mouseprints.net^r^rPhotoshop Script^rCustomize using first four var</about>
<category>JJMack's Script</category>
<enableinfo>true</enableinfo>
</javascriptresource>
*/
#target photoshop;  
app.bringToFront();  
var logoFile = "~/Desktop/JJMack.png";						// Watermark file should be large for resize down works better than up
var LogoSize = 10;											// percent of document height to resize Watermark to
var LogoMargin = 1;                                         // percent of Document height the Watermark should have as a margin
var BottomLetf = false;										// false = Bottom Right true Bottom Left 
//placeWatermark(logoFile, LogoSize, LogoMargin);           // Place Watermark into the bottom of the document
if (documents.length) app.activeDocument.suspendHistory('placeWatermark','placeWatermark(logoFile,LogoSize,LogoMargin)' );
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function placeWatermark(Image,Size,Margin){  
	if(!documents.length) return;  							// if no document return
		var fileObj = new File(Image);	                	// the passed file
	if(!fileObj.exists){  									// If file does not exits tell user 
		alert(fileObj.name  + " does not exist!"); 			// Alert User 
		return;  											// return
		}  
	try{  
		var doc = app.activeDocument;						// set Doc object to active document
		app.displayDialogs = DialogModes.NO;				// Dialog off 
		var strtRulerUnits = app.preferences.rulerUnits;	// Save Users ruler units 
		var strtTypeUnits = app.preferences.typeUnits;		// Save Users Type units 
		app.preferences.rulerUnits = Units.PIXELS;			// work with pixels 
		app.preferences.typeUnits = TypeUnits.PIXELS;		// work with pixels 
		var layers = app.activeDocument.layers;				// get layers
		app.activeDocument.activeLayer = layers[0];			// Target Top Layer
		placeFile(fileObj); 								// Place in file the Watermark png file
		activeDocument.activeLayer.resize(100 ,100,AnchorPosition.MIDDLECENTER); // Insure Place did not scale layer  
		var SB = activeDocument.activeLayer.bounds; 		// get layers bounds 
		var layerHeight = SB[3] - SB[1];					// get layers height  
		var resizePercent = (100/layerHeight)*(Size/100*doc.height.value); // Percent to resize by 
		activeDocument.activeLayer.resize(resizePercent ,resizePercent,AnchorPosition.MIDDLECENTER);  // Resize width and height by percentage 
		SB = activeDocument.activeLayer.bounds;				// get resized layers bounds  
		activeDocument.activeLayer.translate(-SB[0].value,-SB[1].value); // Move resized layer to top left canvas corner 
		var LayerWidth = (SB[2].value - SB[0].value);		// get resized layers width  
		var LayerHeight = (SB[3].value - SB[1].value);  	// get resized layers height
		marginSize = Margin/100*doc.height.value;			// Margin size
		// move resized watermark into the document lower right corner with some margin or lower left
		if  ( BottomLetf) {activeDocument.activeLayer.translate(marginSize,( doc.height.value -marginSize - LayerHeight));}
		else {activeDocument.activeLayer.translate((doc.width.value -marginSize - LayerWidth),( doc.height.value -marginSize - LayerHeight));}
	}
	catch(e) { alert(e + ': on line ' + e.line); }			// inform user of error  
	finally{  
		app.preferences.rulerUnits = strtRulerUnits;		// Restore user ruler units  
		app.preferences.typeUnits = strtTypeUnits;			// Restore user type units    
	};  
}; 
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 
function placeFile(placeFile) {  
    var desc21 = new ActionDescriptor();  
    desc21.putPath( charIDToTypeID('null'), new File(placeFile) );  
    desc21.putEnumerated( charIDToTypeID('FTcs'), charIDToTypeID('QCSt'), charIDToTypeID('Qcsa') );  
    var desc22 = new ActionDescriptor();  
    desc22.putUnitDouble( charIDToTypeID('Hrzn'), charIDToTypeID('#Pxl'), 0.000000 );  
    desc22.putUnitDouble( charIDToTypeID('Vrtc'), charIDToTypeID('#Pxl'), 0.000000 );  
    desc21.putObject( charIDToTypeID('Ofst'), charIDToTypeID('Ofst'), desc22 );  
    executeAction( charIDToTypeID('Plc '), desc21, DialogModes.NO );  
};