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I want to select part of a photo I'm editing in Photoshop. The source is 1920 wide and I want to select 720 from the middle so discarding 600 pixels from left and right. Is this possible in Photoshop?

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  • I’m voting to close this question because it is about software product and not photography. – Romeo Ninov Feb 22 at 10:12
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    @RomeoNinov Given that Photoshop has it's own tag, I'd suggest that questions on using Photoshop are on topic – Peter M Feb 22 at 13:24
  • @PeterM, check again the question and tell me where is the photography involved. – Romeo Ninov Feb 22 at 13:38
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    @RomeoNinov Where it literally says "I want to select part of a photo I'm editing" – Peter M Feb 22 at 13:40
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    To clarify the Photoshop status: questions about Photoshop are on-topic only if they relate to photography; "how do I use Photoshop remove a distracting object from <example photo>" is definitely on-topic, "how do I draw a dinosaur in Photoshop?" is definitely off-topic. Other cases are somewhere in the middle. I'll improve the tag to include this information. – Philip Kendall Feb 22 at 14:58
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Choose "fixed size" in the Marquee selection tool ribbon and set it to 720x720 (or 720xH for whatever your height is). Then place a selection on the canvas. Then drag it left or right until it centers (the center vertical line should show when it does).

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Turn on the rulers. In my version there is a selection under the View menu.
Make sure guides are visible under View->Show
Drag from the vertical ruler on to the picture to create a guide. As you move it you can see the pixel position. Position guides at the points you want to select. You may have to zoom in a lot to get the exact pixel position.
The rectangular selection tool will snap to the guides.

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Another potential way to do this is by changing the canvas size. (I don't have Photoshop, but I believe that this will work - it works in Affinity Photo :D)

  1. Select Image=>Canvas Size (which opens the Canvas size dialog box)
  2. In the "New Size" section, set the anchor to be the center box
  3. Leave the "Height" as is
  4. Set the "Width" to be 720 pixels
  5. Leave "Relative" unchecked.
  6. Click on "Ok"

This should take the 720 pixels around the center of the image and effectively crop out the left and right 600 pixels.


Down voter care to explain? Does this method not work?

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  • Resizing the canvas is different than making a marquee selection. – L. Scott Johnson Feb 22 at 19:49
  • @L.ScottJohnson Fair comment, but the OPs question can be read in terms of cropping with the use of "discard" verbiage – Peter M Feb 22 at 19:51
  • Perhaps. Definitely something to clarify, as "select" is a specific term in PS. (I'll also note that in PS, "cropping" is different than resizing the canvas, as well.) – L. Scott Johnson Feb 23 at 12:30

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