Photoshop CC - copy/paste layer from another file that was also calibrated 1:1

Question

Hello!I'm using photoshop for work purposes and have come across a question. I often scan images individually and put them on a single canvas using copy/paste before printing a full sheet. I also occasionally ahve to do the same thing with photographs, but I have to calibrate the images using the scale in the photo to ensure it is 1:1 ratio. When I attempt to copy/paste the calibrated image into a canvas with another image (also has been calibrated), something messes up and only the original image prints to the 1:1 scale. I'm sure the calibration of the image i'm copying FROM is somehow taking the same specs as the image/canvas that i'm copying TO ... is there a way to prevent this from happening so each image stays at it's calibration, or do i simply have to print the pics individually since they are not the same size (unlike using the scanner method above). TIA!

JJMack · Accepted Answer

1:1 is square. 5px by 5px is square 1000px by 1000px is square. Are both of your images the same size and resolition, If you paste 5px by 5px into a 1000px x 1000px image the layer pasted in will be 5px by 5px. If you paste in 1000px x 1000px into a p5x x 5px image the layer pasted in will be 1000px x 1000px. Layers can be any size except for the background layer it is canvas size for Photoshop's background is a special layer that does not support transparency and is the bottom layer in the layer stack. No layer can be moved below it..

JJMack · Answer

A document has a single resolution. You will need to scale the pasted in layer if the document are different in size. If you scale a web size image in a print document that may not be good it will be softer then the web image.

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