1440x1080 is "anamorphic" HD, and it uses non-square pixels to achieve the look of 16:9, even though the actual proportions are 4:3. What I do is just open the still in Photoshop and change size to 1920x1080, making sure that "Constrain" is unchecked first, and Save. You will then have a 16:9 image with square pixels that will display correctly anywhere.
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I don't know about previewing on a Mac, but I can tell you that 1440X1080 uses non-square pixels.
Many (most?) programs do not recognize non-square pixels. As far as I can tell, neither does Bridge, or Lightroom.
So, when you are exporting for use in Photoshop, Premiere Pro, After Effects, etc, feel free to stick with non-square pixels. Just deal with the way they look in other programs.
Or, export to 1920X1080 using square pixels and the problem goes away for most uses. STick to 1440X1080 for Adobe uses though.
Either set the camera to 1920x1080 or make the sequence 1920x1080.
1440x1080 footage easily fits in 1920x1080.
Thanks for the heads up regarding "anamophic" HD and the fact it uses non-square pixels.
I've resized my rendered frame from AE to 1920x1080 making sure that Contrain is unchecked, but Photoshop still prompts me to turn pixel correction on with a new saved 1920x1080 PNG version, and when you do the image is streched horizontally this time. So I turned it off and resaved it and it seems to display the image correctly within Apples preview, but horizontally streched when previewed with the space bar.
I there a way once resaved as a 1920x1080 image to tell the file not to act all alien with other desktop image viewers, or is this how its going to be due to the footage being anamophic, etc.
Resize the image in Photoshop and save it out to a new image using square pixels.