Help – Image pasted/dragged into new file changes size

RJ
Posted By
Raymond_J_Price
Aug 23, 2006
Views
572
Replies
2
Status
Closed
I’ve got File A which is a cropped version of a photo that has been cropped down to 375 px x 525 px and a resolution of 300px/inch. The file is a single background layer. The photo raw image was original 240 px/in and before cropping I went into Image Size and changed the resolution to 300 px/in with resampling turned off.

I’m trying to insert that file into File B that is 750px x 1050px at a resolution of 300px/inch (2.5in x 3.5in). When I open both files and drag the layer from File A onto File B, I get a new layer in file B, but the resulting image on the new layer has been downsized to 325 px x 446 px.

I thought if my resolution (300px/inch) was identical between the two files, I could drag between them and keep the original resolution.
What am I doing wrong?

Another strange thing is that if I go to File A and go into Canvas Size and increase it (grow the canvas from the size of the existing image (1.5in wide by 1.75in high) to 2.5in wide by 3.5in high), it looks like the image again "shrinks". It doesn’t appear to be the full size it once was.

The frustrating thing is that I did this all last year without any issue. I just forgot what I did way back then. ARGHH!

I’m runing Photoshop CS, windows XP

Any help would be appreciated, both by myself and my 10-year old’s baseball team who will hopefully be receiving these baseball cards this weekend at their end of year party.
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Ed_Hannigan
Aug 23, 2006
Are you absolutely sure the reesolutions are consistent between the two documents? I would suspect they are not. Check again.
P
Phosphor
Aug 23, 2006
While working on documents in Photoshop, the only measurement that matters are absolute pixel values. Every other unit of measurement—inches, centimeters, millimeters, etc—are all converted internally by Photoshop to equivalent pixel measurements.

It’s fairly clear by your description that your documents are not of equal pixel-per-unit-of-measurement resolution.

Try this:

Create two brand new documents, both at 4in × 4in.

Document 1 is created at 72 pixels per inch, with a white background. Document 2 is created at 288 pixels per inch, with a black background.

Position these new documents side-by-side onscreen.

Document 1 can likely be viewed at 100% magnification; For the purposes of this test, reduce document 2’s view to a magnification of 25% This will make them appear as the same physical size onscreen.

Select All in document 1. Hold Shift and CTRL and drag the selected area to Document 2. It’ll pop that White area in the center of Document 2.

Notice that 4in × 4in (288px × 288px) in Document 1 only fills one-16th of Document 2. Because, Document 2, while also 4in × 4in has a pixel resolution that is 400% that of Document 1.

The ONLY time you ever have to even consider measurements other than pixels is when you are planning for enough resolution for printing. And that opens whole ‘nother can of worms, because different types of printing output require different types of pre-planning. You want enough resolution for good quality, but if the resolution is too high it’s just wasted on the output print medium, and only serves to make your file sizes larger, with no real increase in quality after the piece is printed.

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